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Integrated Device Technology, Inc.
FAST CMOS DUAL 1-OF-4 DECODER WITH ENABLE
DESCRIPTION:
IDT54/74FCT139T/AT/CT
FEATURES:
* * * * Std., A and C speed grades Low input and output leakage 1A (max.) CMOS power levels True TTL input and output compatibility - VOH = 3.3V (typ.) - VOL = 0.3V (typ.) High drive outputs (-15mA IOH, 48mA IOL) Meets or exceeds JEDEC standard 18 specifications Product available in Radiation Tolerant and Radiation Enhanced versions Military product compliant to MIL-STD-883, Class B and DESC listed (dual marked) Available in DIP, SOIC, QSOP, CERPACK and LCC packages
* * * * *
The IDT54/74FCT139T/AT/CT are dual 1-of-4 decoders built using an advanced dual metal CMOS technology. These devices have two independent decoders, each of which accept two binary weighted inputs (A0-A1) and provide four mutually exclusive active LOW outputs (O0-O3). Each decoder has an active LOW enable (E). When E is HIGH, all outputs are forced HIGH.
FUNCTIONAL BLOCK DIAGRAM
Ea A0a A1a Eb A0b A1b
PIN CONFIGURATIONS
Ea A0a A1a O0a O1a O2a O3a GND 1 2 3 4 5 6 7 8 P16-1 D16-1 SO16-1 SO16-7 & E16-1 16 15 14 13 12 11 10 9 VCC Eb A0b A1b O0b O1b O2b O3b
2566 drw 02
DIP/SOIC/QSOP/CERPACK TOP VIEW
Ea
V CC
A0a
NC
1
INDEX
O0a O1a O2a O3a O0b O1b O2b O3b
2566 drw 01
32 A1a O0a NC O1a O2a 4 5 6 7 8
20 19 18 17 16 15 14
Eb
A0b A1b NC O0b O1b
L20-2
9 10 11 12 13
GND NC
O 3b
O3a
O2b
2566 drw 03
LCC TOP VIEW
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
(c)1995 Integrated Device Technology, Inc.
APRIL 1995
DSC-4218/3
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IDT54/74FCT139T/AT/CT FAST CMOS DUAL 1-OF-4 DECODER WITH ENABLE
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Rating Commercial VTERM(2) Terminal Voltage -0.5 to +7.0 with Respect to GND (3) Terminal Voltage VTERM -0.5 to with Respect to VCC +0.5 GND TA Operating 0 to +70 Temperature TBIAS Temperature -55 to +125 Under Bias TSTG Storage -55 to +125 Temperature PT Power Dissipation 0.5 IOUT DC Output Current -60 to +120 Military -0.5 to +7.0 Unit V
PIN DESCRIPTION
Pin Names A0, A1 Description Address Inputs Enable Input (Active LOW) Outputs (Active LOW)
2566 tbl 01
-0.5 to VCC +0.5 -55 to +125 -65 to +135 -65 to +150 0.5 -60 to +120
V C C C W mA
E O0 - O3
FUNCTION TABLE(1)
E
H L L L L Inputs A0 X L H L H Outputs A1 X L L H H
O0
H L H H H
O1
H H L H H
O2
H H H L H
O3
H
H H H L
2566 lnk 03 NOTES: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. No terminal voltage may exceed VCC by +0.5V unless otherwise noted. 2. Input and VCC terminals only. 3. Outputs and I/O terminals only.
NOTE: 2566 tbl 02 1. H = HIGH Voltage Level; L = LOW Voltage Level; X = Don't Care
CAPACITANCE (TA = +25C, f = 1.0MHz)
Symbol Parameter(1) CIN Input Capacitance COUT Output Capacitance Conditions VIN = 0V VOUT = 0V Typ. 6 8 Max. Unit 10 pF 12
pF
2566 lnk 04
NOTE: 1. This parameter is measured at characterization but not tested.
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Commercial: TA = 0C to +70C, VCC = 5.0V 5%; Military: TA = -55C to +125C, VCC = 5.0V 10%
Symbol VIH VIL II H II L II VIK IOS VOH Parameter Input HIGH Level Input LOW Level Input HIGH Input HIGH Current (4) Current (4) Input LOW Current (4) Clamp Diode Voltage Short Circuit Current Output HIGH Voltage Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max. VCC = Max. VCC = Min., IN = -18mA VCC = Max.(3) , VO = GND VCC = Min. VIN = VIH or VIL IOH = -6mA MIL. IOH = -8mA COM'L. IOH = -12mA MIL. IOH = -15mA COM'L. IOL = 32mA MIL. IOL = 48mA COM'L.
-- VI = 2.7V VI = 0.5V
Min. 2.0 -- -- -- -- -- -60 2.4 2.0 -- -- --
Typ.(2) -- -- -- -- -- -0.7 -120 3.3 3.0 0.3 200 0.01
Max. -- 0.8 1 1 1 -1.2 -225 -- -- 0.5 -- 1
Unit V V A A A V mA V V V mV mA
2566 tbl 05
VCC = Max., VI = VCC (Max.)
VOL VH ICC
Output LOW Voltage Input Hysteresis Quiescent Power Supply Current
VCC = Min. VIN = VIH or VIL VCC = Max. VIN = GND or VCC
NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25C ambient and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the short circuit test should not exceed one second. 4. The test limit for this parameter is 5A at TA = -55C.
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IDT54/74FCT139T/AT/CT FAST CMOS DUAL 1-OF-4 DECODER WITH ENABLE
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
Symbol ICC ICCD Parameter Quiescent Power Supply Current TTL Inputs HIGH Dynamic Power Supply Current(4) Test Conditions(1) VCC = Max. VIN = 3.4V(3) VCC = Max. Outputs Open One Bit Toggling 50% Duty Cycle VCC = Max. Outputs Open fo = 10MHz 50% Duty Cycle One Input and One Output Toggling VCC = Max. Outputs Open fo = 10MHz 50% Duty Cycle One Input Toggling on Each Decoder Two Outputs Toggling Min. -- -- Typ.(2) 0.5 0.15 Max. 2.0 0.3 Unit mA mA/ MHz
VIN = VCC VIN = GND
IC
Total Power Supply Current (6)
VIN = VCC VIN = GND VIN = 3.4V VIN = GND VIN = VCC VIN = GND VIN = 3.4V VIN = GND
--
1.5
4.0
mA
--
1.8
5.0
--
3.0
7.0 (5)
--
3.5
9.0 (5)
NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25C ambient. 3. Per TTL driven input (VIN = 3.4V). All other inputs at VCC or GND. 4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations. 5. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested. 6. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ICC DHNT + ICCD (fONO) ICC = Quiescent Current ICC = Power Supply Current for a TTL High Input (VIN = 3.4V) DH = Duty Cycle for TTL Inputs High NT = Number of TTL Inputs at DH ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL) fO = Output Frequency NO = Number of Outputs at fO All currents are in milliamps and all frequencies are in megahertz.
2566 tbl 06
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
FCT139T Com'l. Parameter Description Condition(1)
Min.
(2)
FCT139AT Mil. Com'l.
(2)
FCT139CT Com'l.
(2)
Mil.
(2)
Mil.
(2)
Max. Min.
(2)
Max. Min.
Max. Min.
Max. Min.
Max. Min.
Max.
Unit
tPLH tPHL tPLH tPHL
Propagation Delay A0 or A1 to On Propagation Delay E to On
CL = 50pF RL = 500
1.5 1.5
9.0 8.0
1.5 12.0 1.5 9.0
1.5 1.5
5.9 5.5
1.5 1.5
7.8 7.2
1.5 1.5
5.0 4.8
1.5 1.5
6.2 5.8
ns ns
NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays.
2566 tbl 07
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IDT54/74FCT139T/AT/CT FAST CMOS DUAL 1-OF-4 DECODER WITH ENABLE
MILITARY AND COMMERCIAL TEMPERATURE RANGES
TEST CIRCUITS AND WAVEFORMS TEST CIRCUITS FOR ALL OUTPUTS
V CC 500 VIN Pulse Generator RT D.U.T. 50pF CL
2566 drw 04
SWITCH POSITION
Test
7.0V
Switch
Open Drain Disable Low Enable Low All Other Tests
Closed Open
VOUT
500
2566 lnk 08 DEFINITIONS: CL= Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
SET-UP, HOLD AND RELEASE TIMES
PULSE WIDTH
DATA INPUT TIMING INPUT ASYNCHRONOUS CONTROL PRESET CLEAR ETC. SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. tSU
tH
3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V
2566 drw 05
LOW-HIGH-LOW PULSE tW HIGH-LOW-HIGH PULSE
1.5V
tREM
1.5V
2566 drw 06
tSU
tH
PROPAGATION DELAY
ENABLE AND DISABLE TIMES
ENABLE DISABLE 3V 1.5V 0V 3.5V 0.3V tPHZ 0.3V 1.5V 0V VOH 0V
2566 drw 08
SAME PHASE INPUT TRANSITION tPLH OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION tPHL tPHL
3V 1.5V 0V VOH 1.5V VOL 3V 1.5V 0V
2566 drw 07
CONTROL INPUT tPZL OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH SWITCH CLOSED tPZH SWITCH OPEN 3.5V 1.5V tPLZ
VOL
NOTES: 1. Diagram shown for input Control Enable-LOW and input Control DisableHIGH 2. Pulse Generator for All Pulses: Rate 1.0MHz; tF 2.5ns; tR 2.5ns
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IDT54/74FCT139T/AT/CT FAST CMOS DUAL 1-OF-4 DECODER WITH ENABLE
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ORDERING INFORMATION
IDT XX Temp. Range FCT X Family XXXX Device Type X Package X Process Blank B P D SO L E Q 139T 139AT 139CT Blank 54 74 Commercial MIL-STD-883, Class B Plastic DIP CERDIP Small Outline IC Leadless Chip Carrier CERPACK Quarter-size Small Outline Package Dual 1-of-4 Decoder
High Drive -55C to +125C 0C to +70C
2566 drw 09
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