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Details, datasheet, quote on part number:SN54ALS158J
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Datasheet text preview:
SN54ALS157A, SN54ALS158 SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158 QUADRUPLE 1-OF-2 DATA SELECTORS/MULTIPLEXERS
SDAS081C APRIL 1982 REVISED DECEMBER 1994
· ·
Buffered Inputs and Outputs Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs
SN54ALS157A, SN54ALS158 . . . J PACKAGE SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158 . . . D OR N PACKAGE (TOP VIEW)
description
These data selectors/multiplexers contain inverters and drivers to supply full data selection to the four output gates. A separate strobe (G) input is provided. A 4-bit word is selected from one of two sources and is routed to the four outputs. The ALS157A and SN74AS157 present true data. The ALS158 and SN74AS158 present inverted data to minimize propagation delay time. The SN54ALS157A and SN54ALS158 are characterized for operation over the full military temperature range of 55°C to 125°C. The SN74ALS157A, SN74ALS158, SN74AS157, and SN74AS158 are characterized for operation from 0°C to 70°C.
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
SN54ALS157A, SN54ALS158 . . . FK PACKAGE (TOP VIEW)
1A A/B NC VCC
3 4 5 6 7 8
1B 1Y NC 2A 2B
2 1 20 19 18 17 16 15
G 4A 4B NC 4Y 3A
14 9 10 11 12 13
NC No internal connection FUNCTION TABLE INPUTS DATA 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 ALS157A SN74AS157 L L H L H ALS158 SN74AS158 H H L H L
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.
Copyright © 1994, Texas Instruments Incorporated
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
2Y GND NC 3Y 3B
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SN54ALS157A, SN54ALS158 SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158 QUAD 1-OF-2 DATA SELECTORS/MULTIPLEXERS
SDAS081C APRIL 1982 REVISED DECEMBER 1994
logic symbols
ALS157A, SN74AS157 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 4 15 G A /B 1A 1Y 1B 2A 2B 3A 3B 4A 4B 2 3 5 6 11 10 14 13 12 4Y 9 3Y 7 2Y 1 1 1 ALS158, SN74AS158 EN G1 MUX 4
1Y
These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the D, J, and N packages.
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54ALS157A, SN54ALS158 SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158 QUAD 1-OF-2 DATA SELECTORS/MULTIPLEXERS
SDAS081C APRIL 1982 REVISED DECEMBER 1994
logic diagrams (positive logic)
ALS157A 1A 2 4 1B 3 1A 1Y 1B 2 4 3 1Y ALS158
2A
5 7
2A 2Y 2B
5 7 6 2Y
2B
6
3A
11 9
3A 3Y 3B
11 9 10 3Y
3B
10
4A
14 12
4A 4Y 4B G A /B
14 12 13 15 1 4Y
4B G A /B
13 15 1
SN74AS157 1A 2 4 1B 2A 3 1Y 1B 2A 7 2B 3A 6 2Y 2B 3A 9 3B 10 3Y 3B 1A 2
SN74AS158
4 3
1Y
5
5 7 6 2Y
11
11 9 10 3Y
4A
14 12 4Y
4A
14 12 4Y
4B G A /B
13 15 1
4B G A /B
13 15 1
Pin numbers shown are for the D, J, and N packages.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
3
SN54ALS157A, SN54ALS158 SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158 QUAD 1-OF-2 DATA SELECTORS/MULTIPLEXERS
SDAS081C APRIL 1982 REVISED DECEMBER 1994
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Operating free-air temperature range, TA: SN54ALS157A, SN54ALS158 . . . . . . . . . . . . . . 55°C to 125°C SN74ALS157A, SN74ALS158 . . . . . . . . . . . . . . . . . . 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.
recommended operating conditions
SN54ALS157A SN54ALS158 MIN VCC VIH VIL IOH IOL TA Supply voltage High-level input voltage Low-level input voltage High-level output current Low-level output current Operating free-air temperature 55 4.5 2 0.7 0.4 4 125 0 NOM 5 MAX 5.5 SN74ALS157A SN74ALS158 MIN 4.5 2 0.8 0.4 8 70 NOM 5 MAX 5.5 V V V mA mA °C UNIT
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER VIK VOH VOL II IIH IIL IO§ ICC ALS157A ALS158 TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V to 5.5 V, VCC = 4 5 V 4.5 VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5 5 V 5.5 V, II = 18 mA IOH = 0.4 mA IOL = 4 mA IOL = 8 mA VI = 7 V VI = 2.7 V VI = 0.4 V VO = 2.25 V See Note 1 Note 20 6 5 SN54ALS157A SN54ALS158 MIN VCC 2 0.25 0.4 0.1 20 0.1 112 11 10 30 6 5 TYP MAX 1.2 VCC 2 0.25 0.35 0.4 0.5 0.1 20 0.1 112 11 10 SN74ALS157A SN74ALS158 MIN TYP MAX 1.2 V V V mA µA mA mA mA UNIT
All typical values are at VCC = 5 V, TA = 25°C. § The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. NOTE 1: ICC is measured with 4.5 V applied to all inputs and all outputs open.
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54ALS157A, SN54ALS158 SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158 QUAD 1-OF-2 DATA SELECTORS/MULTIPLEXERS
SDAS081C APRIL 1982 REVISED DECEMBER 1994
switching characteristics (see Figure 1)
VCC = 5 V, CL = 50 pF, RL = 500 , TA = 25°C ALS157A TYP tPLH tPHL tPLH tPHL tPLH tPHL A or B or 9 Y Y Y 6 15 A/B G 9 14 10 VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 , TA = MIN to MAX SN54ALS157A SN74ALS157A MIN 4 2 7 4 7 4 MAX 17 15 28 20 25 18 MIN 4 2 7 4 7 4 MAX 14 12 24 17 20 13 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.
switching characteristics (see Figure 1)
VCC = 5 V, CL = 50 pF, RL = 500 , TA = 25°C ALS158 TYP tPLH tPHL tPLH tPHL tPLH tPHL A or B or 9 Y Y Y 5 13 A/B G 13 13 13 VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 , TA = MIN to MAX SN54ALS158 SN74ALS158 MIN 4 2 5 5 5 5 MAX 18 12 22 22 22 22 MIN 4 2 5 5 5 5 MAX 15 8 18 18 18 18 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.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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