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74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
Rev. 03 -- 20 May 2008 Product data sheet
1. General description
The 74AHC373; 74AHCT373 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard No. 7-A. The 74AHC373; 74AHCT373 consists of eight D-type transparent latches featuring separate D-type inputs for each latch and 3-state true outputs for bus oriented applications. A latch enable input (LE) and an output enable input (OE) are common to all latches. When pin LE is HIGH, data at the Dn inputs enters the latches. In this condition the latches are transparent, i.e. a latch output will change state each time its corresponding Dn input changes. When pin LE is LOW, the latches store the information that is present at the Dn inputs, after a set-up time preceding the HIGH-to-LOW transition of LE. When pin OE is LOW, the contents of the 8 latches are available at the outputs. When pin OE is HIGH, the outputs go to the high-impedance OFF-state. Operation of the OE input does not affect the state of the latches. The 74AHC373; 74AHCT373 is functionally identical to the 74AHC573; 74AHCT573, but has a different pin arrangement.
2. Features
I I I I I I Balanced propagation delays All inputs have a Schmitt-trigger action Common 3-state output enable input Inputs accepts voltages higher than VCC Functionally identical to the 74AHC573; 74AHCT573 Input levels: N For 74AHC373: CMOS input level N For 74AHCT373: TTL input level I ESD protection: N HBM EIA/JESD22-A114E exceeds 2000 V N MM EIA/JESD22-A115-A exceeds 200 V N CDM EIA/JESD22-C101C exceeds 1000 V I Multiple package options I Specified from -40 C to +85 C and from -40 C to +125 C
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
3. Ordering information
Table 1. Ordering information Package Temperature range 74AHC373 74AHC373D 74AHC373PW 74AHCT373 74AHCT373D 74AHCT373PW -40 C to +125 C -40 C to +125 C SO20 TSSOP20 plastic small outline package; 20 leads; body width 7.5 mm plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT163-1 SOT360-1 -40 C to +125 C -40 C to +125 C SO20 TSSOP20 plastic small outline package; 20 leads; body width 7.5 mm plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT163-1 SOT360-1 Name Description Version Type number
4. Functional diagram
3 4 7 8 13 14 17 18 11 1
D0 D1 D2 D3 D4 D5 D6 D7 LE OE
LATCH 1 TO 8
3-STATE OUTPUTS
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
2 5 6 9 12 15 16 19
001aae050
Fig 1.
Functional diagram
74AHC_AHCT373_3
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
2 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
OE LE 11 3 4 7 8 13 14 17 18 LE D0 D1 D2 D3 D4 D5 D6 D7 OE 1
001aae048
1 11
EN C1
D0 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 2 5 6 9 12 15 16 19 D1 D2 D3 D4 D5 D6 D7
3 4 7 8 13 14 17 18
1D
2 5 6 9 12 15 16 19
001aae049
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
Fig 2.
Logic symbol
Fig 3.
IEC logic symbol
D0
D1
D2
D3
D4
D5
D6
D7
D
Q
D
Q
D
Q
D
Q
D
Q
D
Q
D
Q
D
Q
LATCH 1 LE LE
LATCH 2 LE LE
LATCH 3 LE LE
LATCH 4 LE LE
LATCH 5 LE LE
LATCH 6 LE LE
LATCH 7 LE LE
LATCH 8 LE LE
LE OE
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
001aae052
Fig 4.
Logic diagram
LE
LE LE D Q
LE
001aae051
Fig 5.
Logic diagram (one latch)
74AHC_AHCT373_3
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
3 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
5. Pinning information
5.1 Pinning
74AHC373 74AHCT373
OE Q0 D0 D1 Q1 Q2 D2 D3 Q3 1 2 3 4 5 6 7 8 9 20 VCC 19 Q7 18 D7 17 D6 16 Q6 15 Q5 14 D5 13 D4 12 Q4 11 LE
001aai132
GND 10
Fig 6.
Pin configuration SO20 and TSSOP20
5.2 Pin description
Table 2. Symbol OE Q0 D0 D1 Q1 Q2 D2 D3 Q3 GND LE Q4 D4 D5 Q5 Q6 D6 Pin description Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Description 3-state output enable input (active LOW) 3-state latch output data input data input 3-state latch output 3-state latch output data input data input 3-state latch output ground (0 V) latch enable input (active HIGH) 3-state latch output data input data input 3-state latch output 3-state latch output data input
74AHC_AHCT373_3
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
4 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
Table 2. Symbol D7 Q7 VCC
Pin description ...continued Pin 18 19 20 Description data input 3-state latch output supply voltage
6. Functional description
Table 3. Function table[1] Control OE Enable and read register (transparent mode) Latch and read register Latch register and disable outputs L L H LE H L X Input Dn L H l h X X
[1] H = HIGH voltage level; h = HIGH voltage level one set-up time prior to the HIGH-to-LOW LE transition; L = LOW voltage level; l = LOW voltage level one set-up time prior to the HIGH-to-LOW LE transition; X = don't care; Z = high-impedance OFF-state.
Operating mode
Internal latch L H L H X X
Output Q0 to Q7 L H L H Z Z
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
[1] [2]
Parameter supply voltage input voltage input clamping current output clamping current output current supply current ground current storage temperature total power dissipation
Conditions
Min -0.5 -0.5
Max +7.0 +7.0 +20 +25 +75 +150 500
Unit V V mA mA mA mA mA C 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 -20 -25 -75 -65
Tamb = -40 C to +125 C
[2]
-
The input and output voltage ratings may be exceeded if the input and output current ratings are observed. For SO20 packages: above 70 C the value of Ptot derates linearly at 8 mW/K. For TSSOP20 packages: above 60 C the value of Ptot derates linearly at 5.5 mW/K.
74AHC_AHCT373_3
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
5 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
8. Recommended operating conditions
Table 5. Symbol 74AHC373 VCC VI VO Tamb t/V 74AHCT373 VCC VI VO Tamb t/V supply voltage input voltage output voltage ambient temperature input transition rise and fall rate VCC = 4.5 V to 5.5 V 4.5 0 0 -40 5.0 +25 5.5 5.5 VCC +125 20 V V V C ns/V supply voltage input voltage output voltage ambient temperature input transition rise and fall rate VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V 2.0 0 0 -40 5.0 +25 5.5 5.5 VCC +125 100 20 V V V C ns/V ns/V Operating conditions Parameter Conditions Min Typ Max Unit
9. Static characteristics
Table 6. Static characteristics At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter 74AHC373 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 VI = VIH or VIL output voltage 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 VI = VIH or VIL output voltage 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
74AHC_AHCT373_3
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 3.80 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
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
6 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
Table 6. Static characteristics ...continued At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter IOZ OFF-state output current input leakage current Conditions Min VI = VIH or VIL; VO = VCC or GND; VCC = 5.5 V VI = VCC or GND; VCC = 0 V to 5.5 V 25 C Typ Max 0.2 5 0.1 4.0 10 -40 C to +85 C -40 C to +125 C Unit Min Max 2.5 Min Max 10.0 A
II ICC CI CO
-
3 4
-
1.0 40 10 -
-
2.0 80 10 10
A A pF pF
supply current VI = VCC or GND; IO = 0 A; VCC = 5.5 V input capacitance output capacitance HIGH-level input voltage LOW-level input voltage VCC = 4.5 V to 5.5 V VCC = 4.5 V to 5.5 V VI = VCC or GND
74AHCT373 VIH VIL VOH 2.0 0.8 2.0 0.8 2.0 0.8 V V
HIGH-level VI = VIH or VIL; VCC = 4.5 V output voltage IO = -50 A IO = -8.0 mA LOW-level VI = VIH or VIL; VCC = 4.5 V output voltage IO = 50 A IO = 8.0 mA OFF-state output current VI = VIH or VIL; VO = VCC or GND per input pin; other inputs at VCC or GND; IO = 0 A; VCC = 5.5 V VI = 5.5 V or GND; VCC = 0 V to 5.5 V
4.4 3.94 -
4.5 0 -
0.1 0.36 0.2 5
4.4 3.80 -
0.1 0.44 2.5
4.4 3.70 -
0.1 0.55 10.0
V V V V A
VOL
IOZ
II ICC ICC
input leakage current
-
-
0.1 4.0 1.35
-
1.0 40 1.5
-
2.0 80 1.5
A A A
supply current VI = VCC or GND; IO = 0 A; VCC = 5.5 V additional per input pin; supply current VI = VCC - 2.1 V; other pins at VCC or GND; IO = 0 A; VCC = 4.5 V to 5.5 V input capacitance output capacitance VI = VCC or GND
CI CO
-
3 4
10 -
-
10 -
-
10 10
pF pF
74AHC_AHCT373_3
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
7 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
10. Dynamic characteristics
Table 7. Dynamic characteristics Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 11. Symbol Parameter 74AHC373 tpd propagation delay Dn to Qn; 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 LE to Qn; see Figure 8 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 ten enable time OE to Qn; see Figure 9 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 tdis disable time OE to Qn; see Figure 9 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 tW pulse width LE HIGH or LOW; see Figure 8 VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V tsu set-up time Dn to LE; see Figure 10 VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V 4.0 4.0 4.0 4.0 4.0 4.0 ns ns 5.0 5.0 5.0 5.0 5.0 5.0 ns ns 4.3 6.4 7.2 9.2 1.0 1.0 8.5 10.5 1.0 1.0 9.5 11.5 ns ns 5.6 9.2 10.0 13.3 1.0 1.0 12.0 15.0 1.0 1.0 13.0 17.0 ns ns
[4] [3] [2] [2]
Conditions Min
25 C Typ[1] Max
-40 C to +85 C -40 C to +125 C Unit Min Max Min Max
-
6.0 7.8 4.0 5.3
11.4 14.9 7.2 9.2
1.0 1.0 1.0 1.0
13.5 17.0 8.5 10.5
1.0 1.0 1.0 1.0
14.5 19.0 9.0 11.5
ns ns ns ns
-
6.3 8.3 4.3 5.6
11.0 14.5 7.2 9.7
1.0 1.0 1.0 1.0
13.0 16.5 8.5 11.1
1.0 1.0 1.0 1.0
14.0 18.5 9.0 12.5
ns ns ns ns
-
5.6 7.5 3.8 5.2
11.4 14.9 8.1 10.1
1.0 1.0 1.0 1.0
13.5 17.0 9.5 11.5
1.0 1.0 1.0 1.0
14.5 19.0 10.5 13.0
ns ns ns ns
74AHC_AHCT373_3
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
8 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
Table 7. Dynamic characteristics ...continued Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 11. Symbol Parameter th hold time Conditions Min Dn to LE; see Figure 10 VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V CPD power dissipation capacitance propagation delay fi = 1 MHz; VI = GND to VCC
[5]
25 C Typ[1] 10 Max -
-40 C to +85 C -40 C to +125 C Unit Min 1.0 1.0 Max Min 1.0 1.0 Max ns ns pF
1.0 1.0 -
74AHCT373; VCC = 4.5 V to 5.5 V tpd Dn to Qn; see Figure 7 CL = 15 pF CL = 50 pF LE to Qn; see Figure 8 CL = 15 pF CL = 50 pF ten enable time OE to Qn; see Figure 9 CL = 15 pF CL = 50 pF tdis disable time OE to Qn; see Figure 9 CL = 15 pF CL = 50 pF tW tsu th CPD pulse width set-up time hold time power dissipation capacitance LE HIGH; see Figure 8 Dn to LE; see Figure 10 Dn to LE; see Figure 10 fi = 1 MHz; VI = GND to VCC
[5] [4] [4] [4] [4]
6.5 3.5 1.5 -
4.0 5.2 4.3 5.5 4.0 5.2 4.4 6.5 12
8.5 9.5 12.3 13.3 10.9 11.9 10.2 11.2 -
1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 6.5 3.5 1.5 -
9.5 10.5 13.5 14.5 12.5 13.5 11.0 12.0 -
1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 6.5 3.5 1.5 -
11.0 12.0 15.5 17.0 14.0 15.0 13.0 14.0 -
ns ns ns ns ns ns ns ns ns ns ns pF
[1] [2] [3] [4] [5]
Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V). tpd is the same as tPHL and tPLH. ten is the same as tPZH and tPZL. tdis is the same as tPHZ and tPLZ. CPD is used to determine the dynamic power dissipation (PD in W). PD = CPD x VCC2 x fi x N + (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; N = number of inputs switching; (CL x VCC2 x fo) = sum of the outputs.
74AHC_AHCT373_3
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
9 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
11. Waveforms
VI Dn input GND tPHL VOH Qn output VOL VM
mna811
VM
tPLH
Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load.
Fig 7.
Data input to output propagation delays
1/fmax VI LE input GND tW t PHL VOH Qn output VOL VM
mna812
VM
t PLH
Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load.
Fig 8.
Latch enable pulse width and input to output propagation delays
74AHC_AHCT373_3
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
10 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
VI OE input GND t PLZ VCC Qn output LOW-to-OFF OFF-to-LOW VOL t PHZ VOH Qn output HIGH-to-OFF OFF-to-HIGH GND outputs enabled outputs disabled outputs enabled
mna813
VM
t PZL
VM VX t PZH VY VM
Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load.
Fig 9.
Enable and disable times
VI Dn input GND th t su VI LE input GND
mna814
VM
th t su
VM
Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load. The shaded areas indicate when the input is permitted to change for predicable output performance.
Fig 10. Data set-up and hold times Table 8. Type 74AHC373 74AHCT373 Measurement points Input VM 0.5 x VCC 1.5 V Output VM 0.5 x VCC 0.5 x VCC VX VOL + 0.3 V VOL + 0.3 V VY VOH - 0.3 V VOH - 0.3 V
74AHC_AHCT373_3
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
11 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
VI negative pulse 0V
tW 90 % VM 10 % tf tr tr tf 90 % VM 10 % tW VM VM
VI positive pulse 0V
VCC
VCC
G
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 resistance. S1 = test selection switch.
Fig 11. Test circuitry for switching times Table 9. Type 74AHC373 74AHCT373 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_AHCT373_3
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
12 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
12. Package outline
SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1
D
E
A X
c y HE vMA
Z 20 11
Q A2 A1 pin 1 index Lp L 1 e bp 10 wM detail X (A 3) A
0
5 scale
10 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm inches A max. 2.65 0.1 A1 0.3 0.1 A2 2.45 2.25 A3 0.25 0.01 bp 0.49 0.36 c 0.32 0.23 D (1) 13.0 12.6 0.51 0.49 E (1) 7.6 7.4 0.30 0.29 e 1.27 0.05 HE 10.65 10.00 L 1.4 Lp 1.1 0.4 Q 1.1 1.0 0.043 0.039 v 0.25 0.01 w 0.25 0.01 y 0.1 Z
(1)
0.9 0.4
0.012 0.096 0.004 0.089
0.019 0.013 0.014 0.009
0.419 0.043 0.055 0.394 0.016
0.035 0.004 0.016
8 o 0
o
Note 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. OUTLINE VERSION SOT163-1 REFERENCES IEC 075E04 JEDEC MS-013 JEITA EUROPEAN PROJECTION
ISSUE DATE 99-12-27 03-02-19
Fig 12. Package outline SOT163-1 (SO20)
74AHC_AHCT373_3 (c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
13 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
SOT360-1
D
E
A
X
c y HE vMA
Z
20
11
Q A2 pin 1 index A1 (A 3) A
Lp L
1
e bp
10
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) 6.6 6.4 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) 0.5 0.2 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 SOT360-1 REFERENCES IEC JEDEC MO-153 JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-19
Fig 13. Package outline SOT360-1 (TSSOP20)
74AHC_AHCT373_3 (c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
14 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
13. Abbreviations
Table 10. Acronym CDM CMOS ESD HBM MM TTL Abbreviations Description Charged Device Model Complementary Metal-Oxide Semiconductor ElectroStatic Discharge Human Body Model Machine Model Transistor-Transistor Logic
14. Revision history
Table 11. Revision history Release date 20080520 Data sheet status Product data sheet Change notice Supersedes 74AHC_AHCT373_2 Document ID 74AHC_AHCT373_3 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. Table 6: conditions for the input leakage current have been changed. Product specification Product specification 74AHC_AHCT373_1 -
74AHC_AHCT373_2 74AHC_AHCT373_1
19991123 19981211
74AHC_AHCT373_3
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
15 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
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 more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com
74AHC_AHCT373_3
(c) NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 -- 20 May 2008
16 of 17
NXP Semiconductors
74AHC373; 74AHCT373
Octal D-type transparant latch; 3-state
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 . . . . . . . . . . . . . . . . . . . . . . 4 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 Functional description . . . . . . . . . . . . . . . . . . . 5 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 5 Recommended operating conditions. . . . . . . . 6 Static characteristics. . . . . . . . . . . . . . . . . . . . . 6 Dynamic characteristics . . . . . . . . . . . . . . . . . . 8 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 13 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Revision history . . . . . . . . . . . . . . . . . . . . . . . . 15 Legal information. . . . . . . . . . . . . . . . . . . . . . . 16 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 16 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Contact information. . . . . . . . . . . . . . . . . . . . . 16 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
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: 20 May 2008 Document identifier: 74AHC_AHCT373_3

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