8-bit Identity Comparator

www.DataSheet4U.com 54AC11521, 74AC11521 8-BIT IDENTITY COMPARATORS SCAS022A – D2957, JULY 1987 – REVISED APRIL 1993 • • • • • • Compares Two 8-Bit Words Flow-Through Architecture Optimizes PCB Layout Center-Pin VCC and GND Configurations Minimize High-Speed Switching Noise EPIC t (Enhanced-Performance Implanted CMOS) 1-m m Process 500-mA Typical Latch-Up Immunity at 125°C Package Options Include Plastic SmallOutline Packages, Plastic Shrink Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs 54AC11521 . . . J PACKAGE 74AC11521 . . . DB, DW OR N PACKAGE (TOP VIEW) 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 Q3 VCC P4 Q4 P5 Q5 description These identity comparators perform comparisons on two 8-bit binary or BCD words. Also included is a P = Q totem-pole output. The 54AC11521 is characterized for operation over the full military temperature range of – 55°C to 125°C. The 74AC11521 is characterized for operation from – 40°C to 85°C. FUNCTION TABLE INPUTS DATA P, Q P=Q P>Q P VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 20 mA Output clamp current, IOK (VO < 0 or 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. 2–2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 www.DataSheet4U.com 54AC11521, 74AC11521 8-BIT IDENTITY COMPARATORS SCAS022A – D2957, JULY 1987 – REVISED APRIL 1993 recommended operating conditions 54AC11521 MIN VCC VIH Supply voltage High-level input voltage VCC = 3 V VCC = 4.5 V VCC = 5.5 V VCC = 3 V VIL VI VO IOH Low-level input voltage Input voltage Output voltage High-level output current VCC = 3 V VCC = 4.5 V VCC = 5.5 V VCC = 3 V IOL Low-level output current Input transition rise or fall rate Operating free-air temperature VCC = 4.5 V VCC = 5.5 V 0 – 55 VCC = 4.5 V VCC = 5.5 V 0 0 3 2.1 3.15 3.85 0.9 1.35 1.65 VCC VCC –4 – 24 – 24 12 24 24 10 125 0 – 40 0 0 NOM 5 MAX 5.5 74AC11521 MIN 3 2.1 3.15 3.85 0.9 1.35 1.65 VCC VCC –4 – 24 – 24 12 24 24 10 85 ns / V °C mA mA V V V V NOM 5 MAX 5.5 UNIT V D t /D v TA electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC 3V IOH = – 50 m A IOH = – 4 mA IOH = – 24 mA IOH = – 50 mA{ 4.5 V 5.5 V 3V 4.5 V 5.5 V 5.5 V 5.5 V 3V IOL = 50 m A IOL = 12 mA IOL = 24 mA IOL = 50 mA{ II ICC Ci IOL = 75 mA{ VI = VCC or GND VI = VCC or GND, VI = VCC or GND IO = 0 4.5 V 5.5 V 3V 4.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5V 4 ± 0.1 8 ±1 160 VOL 0.1 0.1 0.1 0.36 0.36 0.36 0.1 0.1 0.1 0.5 0.5 0.5 1.65 1.65 ±1 80 VOH MIN 2.9 4.4 5.4 2.58 3.94 4.94 TA = 25°C TYP MAX 54AC11521 MIN 2.9 4.4 5.4 2.4 3.7 4.7 3.85 3.85 0.1 0.1 0.1 0.44 0.44 0.44 V MAX 74AC11521 MIN 2.9 4.4 5.4 2.48 3.8 4.8 V MAX UNIT IOH = – 75 mA{ mA mA pF † Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2–3 www.DataSheet4U.com 54AC11521, 74AC11521 8-BIT IDENTITY COMPARATORS SCAS022A – D2957, JULY 1987 – REVISED APRIL 1993 switching characteristics over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1) PARAMETER tPLH tPHL tPLH tPHL FROM (INPUT) P or Q TO (OUTPUT) P=Q P=Q MIN 1.5 1.5 1.5 G 1.5 TA = 25°C TYP MAX 12.5 10.5 7.1 6.4 16.6 14.1 9.8 8.8 54AC11521 MIN 1.5 1.5 1.5 1.5 MAX 20.4 17.4 11.4 10.8 74AC11521 MIN 1.5 1.5 1.5 1.5 MAX 19 16.1 10.8 10.1 UNIT ns ns switching characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) PARAMETER tPLH tPHL tPLH tPHL FROM (INPUT) P or Q TO (OUTPUT) P=Q P=Q MIN 1.5 1.5 1.5 G 1.5 TA = 25°C TYP MAX 8.3 7.2 5.1 4.8 11.3 10.1 7.1 7.1 54AC11521 MIN 1.5 1.5 1.5 1.5 MAX 14 12.2 8.4 8.6 74AC11521 MIN 1.5 1.5 1.5 1.5 MAX 13 11.4 7.9 8.1 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 42 UNIT pF PARAMETER MEASUREMENT INFORMATION From Output Under Test CL = 50 pF (see Note A) 500 Ω Output Input (see Note B) tPHL VCC 50% 50% 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 Ω, 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 2–4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 www.DataSheet4U.com IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. 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