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SN74HC251, SN74HC251ANSR, SN74HC251D

Table of contents:
Info of SN74HC251
Info of SN74HC251ANSR
Info of SN74HC251D

SN74HC251, SN74HC251ANSR, SN74HC251D Selling Leads, Datasheet

MFG:Texas Instruments Category:Integrated Circuits (ICs) Package Cooled:SOP3.9 D/C:5

SN74HC251, SN74HC251ANSR, SN74HC251D Datasheet download

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Part Number: SN74HC251D

Category: Integrated Circuits (ICs)

MFG: Texas Instruments

Package Cooled: SOP3.9

D/C: 5

Description: IC DATA SEL/MUX TRI-ST 16-SOIC

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SN74HC251 General Description

These data selectors/multiplexers contain full binary decoding to select 1-of-8 data sources and feature strobe-controlled complementary 3-state
outputs.

The 3-state outputs can interface with and drive data lines of bus-organized systems. With all but one of the common outputs disabled (in the
high-impedance state), the low impedance of the single enabled output drives the bus line to a high or low logic level. Both outputs are controlled by the output-enable (OE) input. The outputs are disabled when OE is high.

SN74HC251 Maximum Ratings

Supply voltage range, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Input clamp current, I_IK (V_I < 0 or V_I > V_CC) (see Note 1) . . . . . . . . . . . . . . . . .±20 mA
Output clamp current, I_OK (V_O < 0 or V_O > V_CC) (see Note 1) . . . . . . . . . . . . . . ±20 mA
Continuous output current, I_O (V_O = 0 to V_CC) . . . . . . . . . . . . . . . . . . . . . . . . . ±35 mA
Continuous current through V_CC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..±70 mA
Package thermal impedance, J_A (see Note 2): D package . . . . . . . .  . .  . . . . .. 73/W
                                                                          DB package . . . . . . . . . . . . . . ... 82/W
                                                                          N package . . . . . . . . . . . . .. . .    67/W
                                                                          NS package . . . . . . . . . . . . . . . . 64/W
                                                                          PW package . . . . . . . . . . . . . .. 108/W
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..−65 to 150

† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only,and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.

SN74HC251 Features

3-State Version of 'HC151
Wide Operating Voltage Range of 2 V to 6 V
High-Current 3-State Outputs Interface Directly With System Bus or Can Drive Up To 15 LSTTL Loads
Low Power Consumption, 80-A Max I_CC
Typical t_pd = 9 ns
±6-mA Output Drive at 5 V
Low Input Current of 1 A Max
Perform Parallel-to-Serial Conversion
Complementary Outputs Provide True and Inverted Data

SN74HC251 Connection Diagram

SN74HC251D Parameters

Technical/Catalog Information	SN74HC251D
Vendor	Texas Instruments
Category	Integrated Circuits (ICs)
Circuit	1 x 8:1
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	Data Selector/Multiplexer
Voltage Supply Source	Single Supply
Operating Temperature	-40°C ~ 85°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	SN74HC251D SN74HC251D 296 8280 5 ND 29682805ND 296-8280-5

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