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Details, datasheet, quote on part number:SN54F157AJ
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Datasheet text preview:
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)
description
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. 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.
FUNCTION TABLE INPUTS G H L L L L A /B X L L H H A X L H X X B X X X L H OUTPUT Y L L H L H
A /B 1A 1B 1Y 2A 2B 2Y GND
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
VCC G 4A 4B 4Y 3A 3B 3Y
SN54F157A . . . FK PACKAGE (TOP VIEW)
1B 1Y NC 2A 2B
4 5 6 7 8
3 2 1 20 19 18 17 16 15 14 9 10 11 12 13
1A A/B NC VCC G 4A 4B NC 4Y 3A
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
2Y GND NC 3Y 3B
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SN54F157A, SN74F157A QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SDFS053A MARCH 1987 REVISED OCTOBER 1993
logic symbol
15 G A /B 1A 1B 2A 2B 3A 3B 4A 4B 2 3 5 6 11 10 14 13 12 4Y 9 3Y 7 2Y 1 1 1 EN G1 MUX
logic diagram (positive logic)
1A 2 4 1B 4 1Y 2A 3
1Y
5 7
2B
6
2Y
3A
11 9
3B This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the D, J, and N packages. 4B G A /B
10
3Y
4A
14 12 13 15 1
4Y
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 MIN VCC VIH VIL IIK IOH IOL TA Supply voltage High-level input voltage Low-level input voltage Input clamp current High-level output current Low-level output current Operating free-air temperature 55 4.5 2 0.8 18 1 20 125 0 NOM 5 MAX 5.5 SN74F157A MIN 4.5 2 0.8 18 1 20 70 NOM 5 MAX 5.5 UNIT V V V mA mA mA °C
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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 VCC = 4.5 V, VCC = 4.5 V, VCC = 4.75 V, VCC = 4.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, TEST CONDITIONS CONDITIONS II = 18 mA IOH = 1 mA IOH = 1 mA IOL = 20 mA VI = 7 V VI = 2.7 V VI = 0.5 V VO = 0 60 MIN SN54F157A TYP MAX 1.2 2.5 3.4 0.3 0.5 0.1 20 0.6 150 60 2.5 2.7 0.3 0.5 0.1 20 0.6 150 23 3.4 MIN SN74F157A TYP MAX 1.2 UNIT V V V mA µA mA mA mA
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)
VCC = 5 V, CL = 50 pF, RL = 500 , TA = 25°C F157A MIN tPLH tPHL tPLH tPHL tPLH tPHL A /B G A or B or Y Y Y 3.2 2.2 4.2 1.7 1.7 1.7 TYP 6.6 4.6 6.6 4.1 4.1 3.6 MAX 10 7 9.5 6.5 6 5.5 VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 , TA = MIN to MAX§ SN54F157A MIN 3.2 2.2 4.2 1.7 1.7 1 MAX 12 9 13 7.5 7.5 7.5 SN74F157A MIN 3.2 2.2 4.2 1.7 1.7 1.2 MAX 11 8 11 7 6.5 7 ns ns ns
PARAMETER
FROM (INPUT)
TO (OUTPUT)
UNIT
§ 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
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