SN74F257 Quadruple 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs | TI.com

SN74F257 (ACTIVE) Quadruple 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs

 

Description

The ´F257 is designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs will not load the data lines when the output enable () input is at a high logic level.

The SN54F257 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74F257 is characterized for operation from 0°C to 70°C.

 

 

Features

  • 3-State Outputs Interface Directly With System Bus
  • Provides Bus Interface From Multiple Sources in High-Performance Systems
  • Package Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs

 

Parametrics

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Part number Order Function Technology Family VCC (Min) (V) VCC (Max) (V) Channels (#) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) Configuration Type IOL (Max) (mA) IOH (Max) (mA) Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Bits (#) Digital input leakage (Max) (uA) ESD CDM (kV) ESD HBM (kV)
SN74F257 Order now Encoder
Multiplexer    
F     4.5     5.5     4     5     70     23     7     2:1     3-State Output     24     -3     Catalog     0 to 70     PDIP | 16
SOIC | 16
SO | 16    
16PDIP: 181 mm2: 9.4 x 19.3 (PDIP | 16)
16SO: 80 mm2: 7.8 x 10.2 (SO | 16)
16SOIC: 59 mm2: 6 x 9.9 (SOIC | 16)    
4     5     0.75     2