54F253
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Dual 1-of-4 data selector/multiplexers. SN54F253 . . . J PACKAGE SN74F253 . . . D OR N PACKAGE (TOP VIEW) 1G 1 B2 1C3 3 1C2 4 1C1 5 1C0 6 1Y 7 GND 8 16 VCC 15 2G 14 A 13
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54F251A - 8-Input Multiplexer
(National Semiconductor)
54F 74F251A 8-Input Multiplexer with TRI-STATE Outputs
Obsolete
November 1994
54F 74F251A 8-Input Multiplexer with TRI-STATE Outputs
General Descr.
54F253 - Dual 4-Input Multiplexer
(National Semiconductor)
54F 74F253 Dual 4-Input Multiplexer with TRI-STATE Outputs
Obsolete
November 1994
54F 74F253 Dual 4-Input Multiplexer with TRI-STATE Outputs
Gener.
54F257 - Quadruple 2-Line To 1-Line Data Selectors/Multiplexers
(Texas Instruments)
SN54F257, SN74F257 QUADRUPLE 2ĆLINE TO 1ĆLINE DATA SELECTORS/MULTIPLEXERS
WITH 3ĆSTATE OUTPUTS
SDFS065A − D2932, MARCH 1987 − REVISED OCTOBER 1993
• .
54F257A - Quad 2-Input Multiplexer
(National Semiconductor)
Obsolete
54F 74F257A Quad 2-Input Multiplexer with TRI-STATE Outputs
November 1994
54F 74F257A Quad 2-Input Multiplexer with TRI-STATE Outputs
Gen.
54F258A - Quad 2-Input Multiplexer
(National Semiconductor)
Obsolete
54F 74F258A Quad 2-Input Multiplexer with TRI-STATE Outputs
November 1994
54F 74F258A Quad 2-Input Multiplexer with TRI-STATE Outputs
Gen.
54F20 - Dual 4-Input NAND Gate
(National Semiconductor)
54F 74F20 Dual 4-Input NAND Gate
54F 74F20 Dual 4-Input NAND Gate
General Description
This device contains two independent gates each of which perfor.
54F20 - DUAL 4-INPUT POSITIVE-NAND GATES
(Texas Instruments)
SN54F20, SN74F20 DUAL 4-INPUT POSITIVE-NAND GATES
• Package Options Include Plastic
Small-Outline Packages, Ceramic Chip Carriers, and Standard Plast.
54F219 - 64-Bit Random Access Memory
(National Semiconductor)
Obsolete
54F 74F219 64-Bit Random Access Memory with TRI-STATE Outputs
November 1994
54F 74F219 64-Bit Random Access Memory with TRI-STATE Outputs
.
54F2244 - Octal Buffer/Line Driver
(National Semiconductor)
Obsolete
54F 74F2244 Octal Buffer Line Driver with 25X Series Resistors in Outputs
August 1995
54F 74F2244 Octal Buffer Line Driver with 25X Series.
54F240 - Octal Buffers/Line Drivers
(National Semiconductor)
54F 74F24054F 74F24154F 74F244
Octal Buffers Line Drivers with TRI-STATE Outputs
Obsolete
May 1995
54F 74F24054F 74F24154F 74F244
Octal Buffers.