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74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
Rev. 02 -- 18 January 2008 Product data sheet
1. General description
The 74AHC123A; 74AHCT123A are high-speed Si-gate CMOS devices and are pin compatible with Low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74AHC123A; 74AHCT123A are dual retriggerable monostable multivibrators with output pulse width control by three methods. The basic pulse time is programmed by selection of an external resistor (REXT) and capacitor (CEXT). The external resistor and capacitor are normally connected as shown in Figure 11. Once triggered, the basic output pulse width may be extended by retriggering the gated active LOW-going edge input (nA) or the active HIGH-going edge input (nB). By repeating this process, the output pulse period (nQ = HIGH, nQ = LOW) can be made as long as desired. Alternatively an output delay can be terminated at any time by a LOW-going edge on input nRD, which also inhibits the triggering. An internal connection from nRD to the input gate makes it possible to trigger the circuit by a positive-going signal at input nRD as shown in Table 3. Figure 8 and Figure 9 illustrate pulse control by retriggering and early reset. The basic output pulse width is essentially determined by the value of the external timing components REXT and CEXT. When CEXT 10 nF, the typical output pulse width is defined as: tW = REXT x CEXT where tW = pulse width in ns; REXT = external resistor in k; CEXT = external capacitor in pF. Schmitt-trigger action at all inputs makes the circuit highly tolerant to slower input rise and fall times. The 74AHC123A; 74AHCT123A is identical to the 74AHC423; 74AHCT423 but can be triggered via the reset input.
2. Features
s s s s s s s s All inputs have a Schmitt-trigger action Inputs accept voltages higher than VCC DC triggered from active HIGH or active LOW inputs Retriggerable for very long pulses up to 100 % duty factor Direct reset terminates output pulse For 74AHC123A only: operates with CMOS input levels For 74AHCT123A only: operates with TTL input levels ESD protection: x HBM JESD22-A114E exceeds 2000 V x MM JESD22-A115-A exceeds 200 V x CDM JESD22-C101C exceeds 1000 V s Multiple package options s Specified from -40 C to +85 C and from -40 C to +125 C
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
3. Ordering information
Table 1. Ordering information Package Temperature range 74AHC123AD 74AHCT123AD 74AHC123APW 74AHCT123APW 74AHC123ABQ 74AHCT123ABQ -40 C to +125 C DHVQFN16 -40 C to +125 C TSSOP16 -40 C to +125 C Name SO16 Description plastic small outline package; 16 leads; body width 3.9 mm Version SOT109-1 Type number
plastic thin shrink small outline package; 16 leads; SOT403-1 body width 4.4 mm plastic dual in-line compatible thermal enhanced SOT763-1 very thin quad flat package; no leads; 16 terminals; body 2.5 x 3.5 x 0.85 mm
4. Functional diagram
14 15
CX RCX & 13
1 14 1CEXT 6 2CEXT 15 1REXT/CEXT 7 2REXT/CEXT S Q 1A 1 2A 9 1B 2 2B 10 T Q RD 4 1Q 12 2Q 13 1Q 5 2Q
6 7
2
4
3
R
CX RCX & 5
9 10
1RD 3 2RD 11
001aae521
12
11
R
001aae522
Fig 1. Logic symbol
Fig 2. IEC logic symbol
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
2 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
14 15 S 1A 1 T 2 Q RD 4 Q
1CEXT 1REXT/CEXT
13
1Q
1Q
1B
1RD
3 6 7 S 2CEXT 2REXT/CEXT
2A
9 T 10
Q
5
2Q
Q RD
12
2Q
2B
2RD
11
001aaa610
Fig 3. Functional diagram
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
3 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
nREXT/CEXT VCC
Q RD Q VCC CL
R CL VCC
R
R
CL
A
CL
CL
B
R
001aae524
For minimum noise generation it is recommended to ground pins 6 (2CEXT) and 14 (1CEXT) externally to pin 8 (GND).
Fig 4. Functional diagram
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
4 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
5. Pinning information
5.1 Pinning
74AHC123A 74AHCT123A
terminal 1 index area 1B 16 VCC 15 1REXT/CEXT 14 1CEXT 13 1Q 12 2Q 11 2RD 10 2B 9
001aah068
74AHC123A 74AHCT123A
1A 1B 1RD 1Q 2Q 2CEXT 2REXT/CEXT GND 1 2 3 4 5 6 7 8
2 3 4 5 6 7 8 GND 2A 9 GND(1)
16 VCC 15 1REXT/CEXT 14 1CEXT 13 1Q 12 2Q 11 2RD 10 2B
1RD 1Q 2Q 2CEXT 2REXT/CEXT
1
1A
2A
001aah067
Transparent top view
(1) The die substrate is attached to this pad using conductive die attach material. It can not be used as a supply pin or input.
Fig 5. Pin configuration SO16, TSSOP16
Fig 6. Pin configuration DHVQFN16
5.2 Pin description
Table 2. Symbol 1A 1B 1RD 1Q 2Q 2CEXT 2REXT/CEXT GND 2A 2B 2RD 2Q 1Q 1CEXT 1REXT/CEXT VCC Pin description Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Description negative-edge triggered input 1 positive-edge triggered input 1 direct reset LOW and positive-edge triggered input 1 active LOW output 1 active HIGH output 2 external capacitor connection 2 external resistor and capacitor connection 2 ground (0 V) negative-edge triggered input 2 positive-edge triggered input 2 direct reset LOW and positive-edge triggered input 2 active LOW output 2 active HIGH output 1 external capacitor connection 1 external resistor and capacitor connection 1 supply voltage
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
5 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
6. Functional description
Table 3. Input nRD L X X H H
[1]
Function table[1] Output nA X H X L L nB X X L H H nQ L L[2] L[2] nQ H H[2] H[2]
H = HIGH voltage level; L = LOW voltage level; X = don't care; = LOW-to-HIGH transition; = HIGH-to-LOW transition; = one HIGH level output pulse; = one LOW level output pulse.
[2]
If the monostable multivibrator was triggered before this condition was established, the pulse will continue as programmed.
7. Limiting values
Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol VCC VI IIK IOK IO ICC IGND Tstg Ptot Parameter supply voltage input voltage input clamping current output clamping current output current supply current ground current storage temperature total power dissipation SO16 package TSSOP16 package DHVQFN16 package
[1] [2] [3] [4]
Conditions
Min -0.5 -0.5
Max +7.0 +7.0 20 25 75 +150 500 500 500
Unit V V mA mA mA mA mA C mW mW mW
VI < -0.5 V VO < -0.5 V or VO > VCC + 0.5 V VO = -0.5 V to (VCC + 0.5 V)
[1] [1]
-20 -75 -65
Tamb = -40 C to +125 C
[2] [3] [4]
-
The input and output voltage ratings may be exceeded if the input and output current ratings are observed. Ptot derates linearly with 8 mW/K above 70 C. Ptot derates linearly with 5.5 mW/K above 60 C. Ptot derates linearly with 4.5 mW/K above 60 C.
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
6 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
8. Recommended operating conditions
Table 5. Recommended operating conditions Voltages are referenced to GND (ground = 0 V). Symbol Parameter VCC VI VO Tamb t/V supply voltage input voltage output voltage ambient temperature input transition rise and fall rate VCC = 3.3 V 0.3 V VCC = 5.0 V 0.5 V Conditions 74AHC123A Min 2.0 0 0 -40 Typ 5.0 +25 Max 5.5 5.5 VCC +125 100 20 74AHCT123A Min 4.5 0 0 -40 Typ 5.0 +25 Max 5.5 5.5 VCC +125 20 V V V C ns/V ns/V Unit
9. Static characteristics
Table 6. Static characteristics Voltages are referenced to GND (ground = 0 V). Symbol Parameter 74AHC123A VIH HIGH-level input voltage VCC = 2.0 V VCC = 3.0 V VCC = 5.5 V VIL LOW-level input voltage VCC = 2.0 V VCC = 3.0 V VCC = 5.5 V VOH HIGH-level output voltage VI = VIH or VIL IO = -50 A; VCC = 2.0 V IO = -50 A; VCC = 3.0 V IO = -50 A; VCC = 4.5 V IO = -4.0 mA; VCC = 3.0 V IO = -8.0 mA; VCC = 4.5 V VOL LOW-level output voltage VI = VIH or VIL IO = 50 A; VCC = 2.0 V IO = 50 A; VCC = 3.0 V IO = 50 A; VCC = 4.5 V IO = 4.0 mA; VCC = 3.0 V IO = 8.0 mA; VCC = 4.5 V II input leakage VI = 5.5 V or GND; current VCC = 0 V to 5.5 V nREXT/CEXT pin nA, nB, nRD
[1]
Conditions Min 1.5 2.1 3.85 1.9 2.9 4.4 2.58 3.94 -
25 C Typ 2.0 3.0 4.5 0 0 0 Max 0.5 0.9 1.65 0.1 0.1 0.1 0.36 0.36
-40 C to +85 C -40 C to +125 C Unit Min 1.5 2.1 3.85 1.9 2.9 4.4 2.48 3.8 Max 0.5 0.9 1.65 0.1 0.1 0.1 0.44 0.44 Min 1.5 2.1 3.85 1.9 2.9 4.4 2.40 3.70 Max 0.5 0.9 1.65 0.1 0.1 0.1 0.55 0.55 V V V V V V V V V V V V V V V V
-
-
0.25 0.1
-
2.5 1.0
-
10.0 2.0
A A
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
7 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
Table 6. Static characteristics ...continued Voltages are referenced to GND (ground = 0 V). Symbol Parameter ICC supply current Conditions Min VI = VCC or GND; IO = 0 A; VCC = 5.5 V active state (per circuit); VI = VCC or GND VCC = 3.0 V VCC = 4.5 V VCC = 5.5 V CI CO input capacitance output capacitance HIGH-level input voltage LOW-level input voltage HIGH-level output voltage LOW-level output voltage VCC = 4.5 V to 5.5 V VCC = 4.5 V to 5.5 V VI = VIH or VIL; VCC = 4.5 V IO = -50 A IO = -8.0 mA VI = VIH or VIL; VCC = 4.5 V IO = 50 A IO = 8.0 mA
[1] [1]
25 C Typ Max 4.0 -
-40 C to +85 C -40 C to +125 C Unit Min Max 40 Min Max 80 A
-
160 380 560 5.0 4.0
250 500 750 10 -
-
280 650 975 10 -
-
280 650 975 10 -
A A A pF pF
74AHCT123A VIH VIL VOH 2.0 0.8 2.0 0.8 2.0 0.8 V V
4.4 3.94 -
4.5 0 -
0.1 0.36 0.25
4.4 3.8 -
0.1 0.44 2.5
4.4 3.70 -
0.1 0.55 10.0
V V V V A
VOL
II
input leakage nREXT/CEXT; current VI = 5.5 V or GND; VCC = 0 V to 5.5 V pin nA, nB, nRD; VI = VCC or GND; VCC = 5.5 V
-
-
0.1
-
1.0
-
2.0
A
ICC
supply current
VI = VCC or GND; IO = 0 A; VCC = 5.5 V active state (per circuit); VI = VCC or GND VCC = 4.5 V VCC = 5.5 V
[1]
-
-
4.0
-
40
-
80
A
-
380 560 3 4.0
500 750 10 -
-
650 975 10 -
-
650 975 10 -
A A pF pF
CI CO
input capacitance output capacitance
[1]
Voltage on nREXT/CEXT = 0.5 x VCC and pin REXT/CEXT in OFF-state during test.
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
8 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
10. Dynamic characteristics
Table 7. Dynamic characteristics GND = 0 V; For test circuit see Figure 12. Symbol Parameter 74AHC123A tpd propagation nA and nB to nQ and nQ; delay see Figure 7 VCC = 3.0 V to 3.6 V CL = 15 pF CL = 50 pF VCC = 4.5 V to 5.5 V CL = 15 pF CL = 50 pF nRD to nQ and nQ; see Figure 7 VCC = 3.0 V to 3.6 V CL = 15 pF CL = 50 pF VCC = 4.5 V to 5.5 V CL = 15 pF CL = 50 pF nRD to nQ and nQ (reset); see Figure 7 VCC = 3.0 V to 3.6 V CL = 15 pF CL = 50 pF VCC = 4.5 V to 5.5 V CL = 15 pF CL = 50 pF 4.4 6.3 9.4 11.4 1.0 1.0 11.0 13.0 1.0 1.0 12.0 14.5 ns ns 6.4 9.2 15.8 19.3 1.0 1.0 18.5 22.0 1.0 1.0 20.0 24.5 ns ns
[2] [2] [2]
Conditions Min
25 C Typ[1] Max
-40 C to +85 C -40 C to +125 C Unit Min Max Min Max
-
7.4 10.5 5.1 7.3
20.6 24.1 12.0 14.0
1.0 1.0 1.0 1.0
24.0 27.5 14.0 16.0
1.0 1.0 1.0 1.0
26.0 30.0 15.5 17.5
ns ns ns ns
-
8.2 11.7 5.6 8.1
22.4 25.9 12.9 14.9
1.0 1.0 1.0 1.0
26.0 29.5 15.0 17.0
1.0 1.0 1.0 1.0
28.0 32.0 16.5 19.0
ns ns ns ns
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
9 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
Table 7. Dynamic characteristics ...continued GND = 0 V; For test circuit see Figure 12. Symbol Parameter tW pulse width Conditions Min inputs; nA = LOW; see Figure 7 VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V inputs; nB = HIGH; see Figure 7 VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V inputs; nRD = LOW; see Figure 7 VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V outputs; nQ = LOW and nQ = HIGH; CL = 50 pF; see Figure 7, Figure 8, Figure 9 and Figure 10 CEXT = 28 pF; REXT = 2 k VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V CEXT = 0.01 F; REXT = 10 k VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V CEXT = 0.1 F; REXT = 10 k; VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V trtrig retrigger time nA to nB; CEXT = 100 pF; REXT = 1 k; CL = 50 pF; see Figure 8 and Figure 10 VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V nA to nB; CEXT = 0.01 F; REXT = 1 k; CL = 50 pF; see Figure 8 and Figure 10 VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V CPD power CL = 50 pF; fi = 1 MHz; dissipation VI = GND to VCC capacitance
[4] [3]
25 C Typ[1] Max
-40 C to +85 C -40 C to +125 C Unit Min Max Min Max
5.0 5.0
-
-
5.0 5.0
-
5.0 5.0
-
ns ns
5.0 5.0
-
-
5.0 5.0
-
5.0 5.0
-
ns ns
5.0 5.0
-
-
5.0 5.0
-
5.0 5.0
-
ns ns
-
115 100
240 200
-
300 240
-
300 240
ns ns
90 90
100 100
110 110
90 90
110 110
85 85
115 115
s s
0.9 0.9
1 1
1.1 1.1
0.9 0.9
1.1 1.1
0.85 0.85
1.15 1.15
ms ms
-
60 39
-
-
-
-
-
ns ns
-
1.5 1.2 57
-
-
-
-
-
s s pF
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
10 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
Table 7. Dynamic characteristics ...continued GND = 0 V; For test circuit see Figure 12. Symbol Parameter 74AHCT123A tpd propagation nA and nB to nQ and nQ; delay see Figure 7 VCC = 4.5 V to 5.5 V CL = 15 pF CL = 50 pF nRD to nQ and nQ; see Figure 7 VCC = 4.5 V to 5.5 V CL = 15 pF CL = 50 pF nRD to nQ and nQ (reset); see Figure 7 VCC = 4.5 V to 5.5 V CL = 15 pF CL = 50 pF tW pulse width inputs; nA = LOW; CL = 50 pF; see Figure 7 VCC = 4.5 V to 5.5 V inputs; nB = HIGH; CL = 50 pF; see Figure 7 VCC = 4.5 V to 5.5 V inputs; nRD = LOW; CL = 50 pF; see Figure 7 VCC = 4.5 V to 5.5 V outputs; nQ = LOW and nQ = HIGH; CL = 50 pF; CEXT = 28 pF; REXT = 2 k; see Figure 7, Figure 8, Figure 9 and Figure 10 VCC = 4.5 V to 5.5 V CEXT = 0.01 F; REXT = 10 k VCC = 4.5 V to 5.5 V CEXT = 0.1 F; REXT = 10 k VCC = 4.5 V to 5.5 V 0.9 1 1.1 0.9 1.1 0.85 1.15 ms 90 100 110 90 110 85 115 s
[3] [2] [2] [2]
Conditions Min
25 C Typ[1] Max
-40 C to +85 C -40 C to +125 C Unit Min Max Min Max
-
5.0 7.1
12.0 14.0
1.0 1.0
14.0 16.0
1.0 1.0
15.5 17.5
ns ns
-
5.2 7.5
12.9 14.9
1.0 1.0
15.0 17.0
1.0 1.0
16.5 18.5
ns ns
-
4.7 6.7
9.4 11.4
1.0 1.0
11.0 13.0
1.0 1.0
12.0 14.5
ns ns
5.0
-
-
5.0
-
5.0
-
ns
5.0
-
-
5.0
-
5.0
-
ns
5.0
-
-
5.0
-
5.0
-
ns
-
100
200
-
240
-
240
ns
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
11 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
Table 7. Dynamic characteristics ...continued GND = 0 V; For test circuit see Figure 12. Symbol Parameter trtrig retrigger time Conditions Min nA to nB; CEXT = 100 pF; REXT = 1 k; CL = 50 pF; see Figure 8 and Figure 10 VCC = 4.5 V to 5.5 V nA to nB; CEXT = 0.01 F; REXT = 1 k; CL = 50 pF; see Figure 8 and Figure 10 VCC = 4.5 V to 5.5 V CPD CL = 50 pF; fi = 1 MHz; power dissipation VI = GND to VCC capacitance external resistance VCC = 2.0 V VCC > 3.0 V
[5] [5] [4]
25 C Typ[1] Max
-40 C to +85 C -40 C to +125 C Unit Min Max Min Max
-
60
-
-
-
-
-
ns
-
1.5 58
-
-
-
-
-
s pF
External components REXT CEXT 5 1 k k pF pF
external VCC = 2.0 V capacitance V > 3.0 V CC
[1] [2] [3] [4]
Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V). tpd is the same as tPLH and tPHL; CEXT = 0 pF; REXT = 5 k. For CEXT 10 nF the typical value of the pulse width tW (s) = CEXT (nF) x REXT (k). CPD is used to determine the dynamic power dissipation PD (W). PD = CPD x VCC2 x fi + (CL x VCC2 x fo) where: fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in pF; VCC = supply voltage in V. CEXT has no limits.
[5]
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
12 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
11. Waveforms
nB input (nA LOW)
VM
tW
nA input (nB HIGH)
VM
tW
RESET
nRD input tPLH nQ output tPLH
VM tW
VM
tW
tPHL tW
tPLH
nQ output
VM tPHL tPHL tPLH tPHL
001aae528
Measurement points are given in Table 8.
Fig 7. Propagation delay input (nA, nB, nRD) to output (nQ, nQ) Table 8. Type 74AHC123A 74AHCT123A Measurement points Input VM 0.5VCC 1.5 V Output VM 0.5VCC 0.5VCC
nB input tW nA input trtrig tW
nQ output tW tW
001aae526
nRD = HIGH
Fig 8. Output pulse control using retrigger pulse
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
13 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
nB input
nRD input
nQ output tW tW
001aae527
nA = LOW
Fig 9. Output pulse control using reset input nRD
trt nA input
nB input
nRD input
nREXT/CEXT
nQ output
nQ output tW tW tW + trt
001aah086
Fig 10. Input and output timing
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
14 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
VCC
REXT
CEXT to nCEXT (pin 14 or 6) to nREXT/CEXT (pin 15 or 7)
mna519
Fig 11. Timing component connections
VI negative pulse 0V
tW 90 % VM 10 % tf tr tr tf 90 % VM 10 % tW VM VM
VI positive pulse 0V
VCC
VCC
PULSE GENERATOR
VI
VO
RL
S1
DUT
RT CL
open
001aad983
Test data is given in Table 9. Definitions test circuit: RT = Termination resistance should be equal to output impedance Zo of the pulse generator CL = Load capacitance including jig and probe capacitance RL = Load resistor S1 = Test selection switch
Fig 12. Load circuitry for switching times Table 9. Type 74AHC123A 74AHCT123A Test data Input VI VCC 3.0 V tr, tf 3.0 ns 3.0 ns Load CL 15 pF, 50 pF 15 pF, 50 pF RL 1 k 1 k S1 position tPHL, tPLH open open tPZH, tPHZ GND GND tPZL, tPLZ VCC VCC
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
15 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
12. Package outline
SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1
D
E
A X
c y HE vMA
Z 16 9
Q A2 pin 1 index Lp 1 e bp 8 wM L detail X A1 (A 3) A
0
2.5 scale
5 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm inches Note 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. OUTLINE VERSION SOT109-1 REFERENCES IEC 076E07 JEDEC MS-012 JEITA EUROPEAN PROJECTION A max. 1.75 A1 0.25 0.10 A2 1.45 1.25 A3 0.25 0.01 bp 0.49 0.36 c 0.25 0.19 D (1) 10.0 9.8 E (1) 4.0 3.8 0.16 0.15 e 1.27 0.05 HE 6.2 5.8 L 1.05 Lp 1.0 0.4 0.039 0.016 Q 0.7 0.6 0.028 0.020 v 0.25 0.01 w 0.25 0.01 y 0.1 Z (1) 0.7 0.3
0.010 0.057 0.069 0.004 0.049
0.019 0.0100 0.39 0.014 0.0075 0.38
0.244 0.041 0.228
0.028 0.004 0.012
8 o 0
o
ISSUE DATE 99-12-27 03-02-19
Fig 13. Package outline SOT109-1 (SO16)
74AHC_AHCT123A_2 (c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
16 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm
SOT403-1
D
E
A
X
c y HE vMA
Z
16
9
Q A2 pin 1 index A1 Lp L (A 3) A
1
e bp
8
wM detail X
0
2.5 scale
5 mm
DIMENSIONS (mm are the original dimensions) UNIT mm A max. 1.1 A1 0.15 0.05 A2 0.95 0.80 A3 0.25 bp 0.30 0.19 c 0.2 0.1 D (1) 5.1 4.9 E (2) 4.5 4.3 e 0.65 HE 6.6 6.2 L 1 Lp 0.75 0.50 Q 0.4 0.3 v 0.2 w 0.13 y 0.1 Z (1) 0.40 0.06 8 o 0
o
Notes 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. Plastic interlead protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT403-1 REFERENCES IEC JEDEC MO-153 JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-18
Fig 14. Package outline SOT403-1 (TSSOP16)
74AHC_AHCT123A_2 (c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
17 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
DHVQFN16: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; SOT763-1 16 terminals; body 2.5 x 3.5 x 0.85 mm
D
B
A
A A1 E c
terminal 1 index area
detail X
terminal 1 index area e 2 L
e1 b 7 vMCAB wM C y1 C
C y
1 Eh 16
8 e 9
15 Dh
10 X 2.5 scale 5 mm
0
DIMENSIONS (mm are the original dimensions) UNIT mm A(1) max. 1 A1 0.05 0.00 b 0.30 0.18 c 0.2 D (1) 3.6 3.4 Dh 2.15 1.85 E (1) 2.6 2.4 Eh 1.15 0.85 e 0.5 e1 2.5 L 0.5 0.3 v 0.1 w 0.05 y 0.05 y1 0.1
Note 1. Plastic or metal protrusions of 0.075 mm maximum per side are not included. OUTLINE VERSION SOT763-1 REFERENCES IEC --JEDEC MO-241 JEITA --EUROPEAN PROJECTION ISSUE DATE 02-10-17 03-01-27
Fig 15. Package outline SOT763-1 (DHVQFN16)
74AHC_AHCT123A_2 (c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
18 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
13. Abbreviations
Table 10. Acronym CDM CMOS DUT ESD HBM MM TTL Abbreviations Description Charged-Device Model Complementary Metal Oxide Semiconductor Device Under Test ElectroStatic Discharge Human Body Model Machine Model Transistor-Transistor Logic
14. Revision history
Table 11. Revision history Release date 20080118 Data sheet status Product data sheet Change notice Supersedes 74AHC_AHCT123A_1 Document ID 74AHC_AHCT123A_2 Modifications:
* * * * *
The format of this data sheet has been redesigned to comply with the new identity guidelines of NXP Semiconductors. Legal texts have been adapted to the new company name where appropriate. Section 3: DHVQFN16 package added. Section 7: derating values added for DHVQFN16 package. Section 12: outline drawing added for DHVQFN16 package. Product specification -
74AHC_AHCT123A_1
20000315
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
19 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
15. Legal information
15.1 Data sheet status
Document status[1][2] Objective [short] data sheet Preliminary [short] data sheet Product [short] data sheet
[1] [2] [3]
Product status[3] Development Qualification Production
Definition This document contains data from the objective specification for product development. This document contains data from the preliminary specification. This document contains the product specification.
Please consult the most recently issued document before initiating or completing a design. The term `short data sheet' is explained in section "Definitions". The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the Internet at URL http://www.nxp.com.
15.2 Definitions
Draft -- The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. Short data sheet -- A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local NXP Semiconductors sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail.
malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. NXP Semiconductors accepts no liability for inclusion and/or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk. Applications -- Applications that are described herein for any of these products are for illustrative purposes only. NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Limiting values -- Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) may cause permanent damage to the device. Limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the Characteristics sections of this document is not implied. Exposure to limiting values for extended periods may affect device reliability. Terms and conditions of sale -- NXP Semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nxp.com/profile/terms, including those pertaining to warranty, intellectual property rights infringement and limitation of liability, unless explicitly otherwise agreed to in writing by NXP Semiconductors. In case of any inconsistency or conflict between information in this document and such terms and conditions, the latter will prevail. No offer to sell or license -- Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights.
15.3 Disclaimers
General -- Information in this document is believed to be accurate and reliable. However, NXP Semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. Right to make changes -- NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. Suitability for use -- NXP Semiconductors products are not designed, authorized or warranted to be suitable for use in medical, military, aircraft, space or life support equipment, nor in applications where failure or
15.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners.
16. Contact information
For additional information, please visit: http://www.nxp.com For sales office addresses, send an email to: salesaddresses@nxp.com
74AHC_AHCT123A_2
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 -- 18 January 2008
20 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
17. Contents
1 2 3 4 5 5.1 5.2 6 7 8 9 10 11 12 13 14 15 15.1 15.2 15.3 15.4 16 17 General description . . . . . . . . . . . . . . . . . . . . . . 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2 Pinning information . . . . . . . . . . . . . . . . . . . . . . 5 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5 Functional description . . . . . . . . . . . . . . . . . . . 6 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 6 Recommended operating conditions. . . . . . . . 7 Static characteristics. . . . . . . . . . . . . . . . . . . . . 7 Dynamic characteristics . . . . . . . . . . . . . . . . . . 9 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 16 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Revision history . . . . . . . . . . . . . . . . . . . . . . . . 19 Legal information. . . . . . . . . . . . . . . . . . . . . . . 20 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 20 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Contact information. . . . . . . . . . . . . . . . . . . . . 20 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Please be aware that important notices concerning this document and the product(s) described herein, have been included in section `Legal information'.
(c) NXP B.V. 2008.
All rights reserved.
For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 18 January 2008 Document identifier: 74AHC_AHCT123A_2

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