SN54F157A, SN74F157A QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS SDFS053A – MARCH 1987 – REVISED OCTOBER 1993 • • Buffered Inputs and Outputs Package Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs SN54F157A . . . J PACKAGE SN74F157A . . . D OR N PACKAGE (TOP VIEW) A /B 1A 1B 1Y 2A 2B 2Y GND description FUNCTION TABLE INPUTS G A /B A B OUTPUT Y H X X X L L L L X L L L H X H L H X L L L H X H H 2 15 3 14 4 13 5 12 6 11 7 10 8 9 VCC G 4A 4B 4Y 3A 3B 3Y SN54F157A . . . FK PACKAGE (TOP VIEW) 1A A/B NC VCC G The SN54F157A is characterized for operation over the full military temperature range of – 55°C to 125°C. The SN74F157A is characterized for operation from 0°C to 70°C. 16 1B 1Y NC 2A 2B 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 4A 4B NC 4Y 3A 2Y GND NC 3Y 3B The ′F157A is a quadruple 2-input data selector/multiplexer featuring a common strobe (G) input. When the strobe is high, all outputs are low. When the strobe is low, a 4-bit word is selected from one of two sources and is routed to the four outputs. The ′F157A provides true data. 1 NC – No internal connection Copyright 1993, 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. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2–1 SN54F157A, SN74F157A QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS SDFS053A – MARCH 1987 – REVISED OCTOBER 1993 logic symbol† 15 G 1 1A 2A 2B 3A 3B 4A 4B 1A EN 2 G1 A /B 1B logic diagram (positive logic) 2 1 3 4 1B MUX 4 1 1Y 2A 5 7 6 7 2B 9 3Y 3A 14 12 13 6 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 9 4A 10 12 G A /B 3Y 14 Pin numbers shown are for the D, J, and N packages. 4B 2Y 11 4Y 3B 1Y 5 2Y 11 10 3 13 4Y 15 1 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 (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 1.2 V to 7 V Input current range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 30 mA to 5 mA Voltage range applied to any output in the high state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to VCC Current into any output in the low state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA Operating free-air temperature range: SN54F157A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C SN74F157A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C 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 voltage rating may be exceeded provided that the input current rating is observed. recommended operating conditions SN54F157A VCC VIH Supply voltage VIL IIK Low-level input voltage IOH IOL High-level output current TA Operating free-air temperature 2–2 High-level input voltage SN74F157A MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 2 Input clamp current Low-level output current 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 V V 0.8 0.8 V – 18 – 18 mA –1 –1 mA 20 mA 70 °C 20 – 55 UNIT 125 0 SN54F157A, SN74F157A QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS SDFS053A – MARCH 1987 – REVISED OCTOBER 1993 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH VOL II IIH IIL IOS‡ ICC SN54F157A TYP† MAX TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V, II = – 18 mA IOH = – 1 mA VCC = 4.75 V, VCC = 4.5 V, IOH = – 1 mA IOL = 20 mA VCC = 5.5 V, VCC = 5.5 V, VI = 7 V VI = 2.7 V VCC = 5.5 V, VCC = 5.5 V, VI = 0.5 V VO = 0 MIN SN74F157A TYP† MAX MIN – 1.2 2.5 3.4 – 1.2 2.5 3.4 0.5 0.5 V 0.1 0.3 0.1 mA 20 20 µA – 0.6 mA –150 mA 23 mA – 0.6 – 60 V V 2.7 0.3 UNIT –150 – 60 VCC = 5.5 V, VI = 4.5 V 15 23 15.5 † All typical values are at VCC = 5 V, TA = 25°C. ‡ Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second. switching characteristics (see Note 2) PARAMETER FROM ((INPUT)) TO (OUTPUT) ( ) VCC = 5 V, CL = 50 pF, RL = 500 Ω, TA = 25°C VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX§ ′F157A tPLH tPHL A /B Y tPLH tPHL G Y tPLH tPHL A or B Y SN54F157A UNIT SN74F157A MIN TYP MAX MIN MAX MIN MAX 3.2 6.6 10 3.2 12 3.2 11 2.2 4.6 7 2.2 9 2.2 8 4.2 6.6 9.5 4.2 13 4.2 11 1.7 4.1 6.5 1.7 7.5 1.7 7 1.7 4.1 6 1.7 7.5 1.7 6.5 1.7 3.6 5.5 1 7.5 1.2 7 ns ns ns § For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. NOTE 2: Load circuits and voltage waveforms are shown in Section 1. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2–3 SN54F157A, SN74F157A QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS SDFS053A – MARCH 1987 – REVISED OCTOBER 1993 2–4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 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. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. 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