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Part: 74ACT11520
Category:
Logic
-> Comparators
-> CMOS/BiCMOS->AC/ACT Family
Description: 8-bit Identity Comparators
Company: Texas Instruments, Inc.
Datasheet: Download 74ACT11520 datasheet File size : 232 kB
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Datasheet text preview:
54ACT11520, 74ACT11520 8-BIT IDENTITY COMPARATORS
SCAS009B D2957, JULY 1987 REVISED APRIL 1993
· · · · · · · ·
Compares Two 8-Bit Words Inputs Are TTL-Voltage Compatible Flow-Through Architecture Optimizes PCB Layout Center-Pin VCC and GND Configurations Minimize High-Speed Switching Noise EPIC (Enhanced-Performance Implanted CMOS) 1-mm Process 500-mA Typical Latch-Up Immunity at 125°C The Device Has the Equivalent of 20-kW Pullup Resistors on Q Inputs Package Options Include Plastic Small- Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs
54ACT11520 . . . J PACKAGE 74ACT11520 . . . DW OR N PACKAGE (TOP VIEW)
t
Q1 P1 Q0 P0 GND P=Q G7 P7 Q6 P6
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
G P2 Q2 P3 G3 VCC P4 Q4 P5 Q5
54ACT11520 . . . FK PACKAGE (TOP VIEW)
description
These identity comparators perform comparisons on two 8-bit binary or BCD words. Features include 20-k pullup termination resistors on the Q inputs for analog or switch data and a P = Q totem-pole output. The 54ACT11520 is characterized for operation over the full military temperature range of 55°C to 125°C. The 74ACT11520 is characterized for operation from 40°C to 85°C.
FUNCTION TABLE INPUTS DATA P, Q P=Q P>Q P
P2 G Q1 P1 Q0
4 5 6 7 8
3 2 1 20 19 18 17 16 15 14 9 10 11 12 13
Q2 P3 Q3 VCC P4 Q4 P5 Q5 P6 Q6
Copyright © 1993, Texas Instruments Incorporated
EPIC is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
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P0 GND P=Q Q7 P7
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54ACT11520, 74ACT11520 8-BIT IDENTITY COMPARATORS
SCAS009B D2957, JULY 1987 REVISED APRIL 1993
logic symbol
G P0 P1 P2 P3 P4 P5 P6 P7 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 20 4 2 19 17 14 12 10 8 3 1 18 16 13 11 9 7 7 Q 7 1P = Q 0 6 P G1 0 COMP
logic diagram (positive logic)
P7 Q7 P6 Q6 P5 P=Q Q5 P4 Q4 P3 Q3 P2 Q2 P1 Q1 P0 Q0 G 8 7 10 9 12 11 14 13 17 6 16 19 18 2 1 4 3 20 P=Q
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the DW, J, and N packages.
schematic of Q inputs
VCC
Input
GND
22
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
54ACT11520, 74ACT11520 8-BIT IDENTITY COMPARATORS
SCAS009B D2957, JULY 1987 REVISED APRIL 1993
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to VCC + 0.5 V Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to VCC + 0.5 V Input clamp current, IIK (VI VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 20 mA Output clamp current, IOK (VO VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 50 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 50 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100 mA Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
recommended operating conditions
54ACT11520 MIN VCC VIH VIL VI VO IOH IOL Dt /Dv TA Supply voltage High-level input voltage Low-level input voltage Input voltage Output voltage High-level output current Low-level output current Input transition rise or fall rate Operating free-air temperature 0 55 0 0 4.5 2 0.8 VCC VCC 24 24 10 125 0 55 0 0 NOM 5 MAX 5.5 74ACT11520 MIN 4.5 2 0.8 VCC VCC 24 24 10 85 NOM 5 MAX 5.5 UNIT V V V V V mA mA ns/ V °C
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54ACT11520, 74ACT11520 8-BIT IDENTITY COMPARATORS
SCAS009B D2957, JULY 1987 REVISED APRIL 1993
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS CONDITIONS IOH = 50 mA mA VOH IOH = 24 mA mA IOH = 50 mA{ IOH = 75 mA{ IOL = 50 mA 50 mA VOL IOL = 24 mA 24 mA IOL = 50 mA{ IIH IIL II IOL = 75 mA{ VI = VCC, Q inputs only VI = GND, Q inputs only VI = VCC or GND, P and G inputs only Q inputs at GND, Other inputs VI = VCC or GND Q inputs at open, Other inputs VI = VCC or GND Q inputs open, One input at 3 4 V and other inputs at in at 3.4 and other in at VCC or GND, P and G inputs only VI = VCC or GND VCC 4.5 V 5.5 V 4.5 V 5.5 V 5.5 V 5.5 V 4.5 V 5.5 V 4.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 2.3 0.3 10 0.6 ± 0.1 4.8 8 10 1 ±1 8 160 0.1 0.1 0.36 0.36 0.1 0.1 0.5 0.5 1.65 1.65 10 1 ±1 8 80 MIN 4.4 5.4 3.94 4.94 TA = 25°C TYP MAX 54ACT11520 MIN 4.4 5.4 3.7 4.7 3.85 3.85 0.1 0.1 0.44 0.44 V MAX 74ACT11520 MIN 4.4 5.4 3.8 4.8 V MAX UNIT
mA mA mA mA mA
mA pF
ICC
DICC}
5.5 V
0.9
1
1
Ci 5V 3.5 Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms. This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or VCC.
switching characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 1)
PARAMETER tPLH tPHL tPLH tPHL FROM (INPUT) P or Q or TO (OUTPUT) P=Q P=Q MIN 1.5 1.5 1.5 G 1.5 TA = 25°C TYP MAX 8.6 8 6.4 5.8 12.7 12.4 8.5 9 54ACT11520 MIN 1.5 1.5 1.5 1.5 MAX 15.4 14.8 10.2 10.4 74ACT11520 MIN 1.5 1.5 1.5 1.5 MAX 14.3 13.9 9.5 9.8 UNIT ns ns
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER Cpd Power dissipation capacitance TEST CONDITIONS CL = 50 pF, f = 1 MHz TYP 40 UNIT pF
24
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
54ACT11520, 74ACT11520 8-BIT IDENTITY COMPARATORS
SCAS009B D2957, JULY 1987 REVISED APRIL 1993
PARAMETER MEASUREMENT INFORMATION
From Output Under Test CL = 50 pF (see Note A) 500 Output Input (see Note B) tPHL 3V 1.5 V 1.5 V 0V tPLH VOH 50% VCC VOL LOAD CIRCUIT VOLTAGE WAVEFORMS
50% VCC
NOTES: A. CL includes probe and jig capacitance. B. Input pulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50 , tr = 3 ns, tf = 3 ns. C. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
TYPICAL CHARACTERISTICS
Q INPUT CURRENT vs INPUT VOLTAGE
0 VCC = 5 V TA = 25°C
50 IIII Input Current µ A uA
100
150
200
250
300 0 1 2 3 4 VI Input Voltage V 5 6
Figure 2
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