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CD74HC254E, CD74HC257, CD74HC257M

Table of contents:
Info of CD74HC254E
Info of CD74HC257
Info of CD74HC257M

CD74HC254E, CD74HC257, CD74HC257M Selling Leads, Datasheet

MFG:Texas Instruments Category:Integrated Circuits (ICs) Package Cooled:DIP-20 D/C:97+

CD74HC254E, CD74HC257, CD74HC257M Datasheet download

Five Points

Part Number: CD74HC257M

Category: Integrated Circuits (ICs)

MFG: Texas Instruments

Package Cooled: DIP-20

D/C: 97+

Description: IC QUAD 2-IN MUX HS TRI-ST 16SOI

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CD74HC257 General Description

The 'HC257 and 'HCT257 are quad 2-input multiplexers which select four bits of data from two sources under the control of a common Select Input (S). The Output Enable input (OE) is active LOW. When OE is HIGH, all of the outputs (1Y-4Y) are in the high impedance state regardless of all other input conditions.

Moving data from two groups of registers to four common output buses is a common use of the 257. The state of the Select input determines the particular register from which the data comes. It can also be used as a function generator.

CD74HC257 Maximum Ratings

DC Supply Voltage, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V
DC Input Diode Current, IIK
For V_I < -0.5V or V_I > V_CC + 0.5V . . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK
For V_O < -0.5V or V_O > V_CC + 0.5V . . . . . . . . . . . . . . . . . . ...±20mA
DC Output Source or Sink Current per Output Pin, IO
For V_O > -0.5V or V_O < V_CC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA
DC V_CC or Ground Current, I_CC. . . . . . . . . . . . . . . . . . . . . . . ±50mA

CD74HC257 Features

• Buffered Inputs
• Typical Propagation Delay ( In to Output ) = 12ns at V_CC = 5V, C_L = 15pF, T_A= 25oC
• Fanout (Over Temperature Range)
    - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
    - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55 to 125
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL Logic ICs
• HC Types
    - 2V to 6V Operation
    - High Noise Immunity: N_IL = 30%, N_IH = 30% of V_CC at V_CC = 5V
• HCT Types
    - 4.5V to 5.5V Operation
    - Direct LSTTL Input Logic Compatibility, V_IL= 0.8V (Max), V_IH = 2V (Min)
    - CMOS Input Compatibility, Il 1mA at V_OL, V_OH

CD74HC257 Connection Diagram

CD74HC257M Parameters

Technical/Catalog Information	CD74HC257M
Vendor	Texas Instruments
Category	Integrated Circuits (ICs)
Circuit	4 x 2:1
Independent Circuits	1
Mounting Type	Surface Mount
Current - Output High, Low	7.8mA, 7.8mA
Package / Case	16-SOIC (3.9mm Width)
Packaging	Tube
Type	Multiplexer
Voltage Supply Source	Single Supply
Operating Temperature	-55°C ~ 125°C
Voltage - Supply	2 V ~ 6 V
Drawing Number	296; 4040047-4; D; 16
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	CD74HC257M CD74HC257M

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