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74F257A

Description
Quad 2-line to 1-line selector/multiplexer, non-inverting 3-State
File Size58KB,6 Pages
ManufacturerFairchild
Websitehttp://www.fairchildsemi.com/
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74F257A Overview

Quad 2-line to 1-line selector/multiplexer, non-inverting 3-State

74F257A Quad 2-Input Multiplexer with 3-STATE Outputs
April 1988
Revised August 1999
74F257A
Quad 2-Input Multiplexer with 3-STATE Outputs
General Description
The 74F257A is a quad 2-input multiplexer with 3-STATE
outputs. Four bits of data from two sources can be selected
using a Common Data Select input. The four outputs
present the selected data in true (non-inverted) form. The
outputs may be switched to a high impedance state with a
HIGH on the common Output Enable (OE) input, allowing
the outputs to interface directly with bus-oriented systems.
Features
s
Multiplexer expansion by tying outputs together
s
Non-inverting 3-STATE outputs
s
Input clamp diodes limit high-speed termination effects
Ordering Code:
Order Number
74F257ASC
74F257ASJ
74F257APC
Package Number
M16A
M16D
N16E
Package Description
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
Connection Diagram
IEEE/IEC
© 1999 Fairchild Semiconductor Corporation
DS009507
www.fairchildsemi.com

74F257A Related Products

74F257A 74F257APC 74F257ASC 74F257ASJ
Description Quad 2-line to 1-line selector/multiplexer, non-inverting 3-State Quad 2-line to 1-line selector/multiplexer, non-inverting 3-State Quad 2-line to 1-line selector/multiplexer, non-inverting 3-State Quad 2-line to 1-line selector/multiplexer, non-inverting 3-State
Is it Rohs certified? - conform to conform to conform to
Maker - Fairchild Fairchild Fairchild
Parts packaging code - DIP SOIC SOIC
package instruction - DIP, DIP16,.3 SOP, SOP16,.25 5.30 MM, EIAJ TYPE2, SOP-16
Contacts - 16 16 16
Reach Compliance Code - unknown unknow compli
series - F/FAST F/FAST F/FAST
JESD-30 code - R-PDIP-T16 R-PDSO-G16 R-PDSO-G16
JESD-609 code - e3 e3 e3
length - 19.305 mm 9.9 mm 10.2 mm
Load capacitance (CL) - 50 pF 50 pF 50 pF
Logic integrated circuit type - MULTIPLEXER MULTIPLEXER MULTIPLEXER
MaximumI(ol) - 0.024 A 0.024 A 0.024 A
Number of functions - 4 4 4
Number of entries - 2 2 2
Output times - 1 1 1
Number of terminals - 16 16 16
Maximum operating temperature - 70 °C 70 °C 70 °C
Output characteristics - 3-STATE 3-STATE 3-STATE
Output polarity - TRUE TRUE TRUE
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - DIP SOP SOP
Encapsulate equivalent code - DIP16,.3 SOP16,.25 SOP16,.3
Package shape - RECTANGULAR RECTANGULAR RECTANGULAR
Package form - IN-LINE SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) - NOT APPLICABLE 260 260
power supply - 5 V 5 V 5 V
Maximum supply current (ICC) - 22 mA 22 mA 22 mA
propagation delay (tpd) - 6 ns 6 ns 6 ns
Certification status - Not Qualified Not Qualified Not Qualified
Maximum seat height - 5.08 mm 1.75 mm 2.1 mm
Maximum supply voltage (Vsup) - 5.5 V 5.5 V 5.5 V
Minimum supply voltage (Vsup) - 4.5 V 4.5 V 4.5 V
Nominal supply voltage (Vsup) - 5 V 5 V 5 V
surface mount - NO YES YES
technology - TTL TTL TTL
Temperature level - COMMERCIAL COMMERCIAL COMMERCIAL
Terminal surface - Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form - THROUGH-HOLE GULL WING GULL WING
Terminal pitch - 2.54 mm 1.27 mm 1.27 mm
Terminal location - DUAL DUAL DUAL
Maximum time at peak reflow temperature - NOT APPLICABLE NOT SPECIFIED NOT SPECIFIED
width - 7.62 mm 3.9 mm 5.3 mm
Base Number Matches - 1 1 1
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