74F257A

74F257A Quad 2-Input Multiplexer with 3-STATE Outputs

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74F257A Quad 2-Input Multiplexer with 3-STATE Outputs

April 1988 Revised September 2000

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

2000 Fairchild Semiconductor Corporation

DS009507

www.fairchildsemi.com