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SN74LS251N

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DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS,Encoders,Decoders,Multiplexers & Demultiplexers 8 to 1

  • Package/Case :
  • PDIP-16
  • Product Categories :
  • Encoders,Decoders,Multiplexers & Demultiplexers
  • RoHs Status:
  • Lead free / RoHS Compliant
  • Marking Code:
  • SN74LS251N
  • In-stock:
  • 3560

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SN74LS251N Product Details

Description

These monolithic data selectors/multiplexers contain full on-chip binary decoding to select one-of-eight data sources and feature a strobe-controlled three-state output. The strobe must be at a low logic level to enable these devices. The three-state outputs permit a number of outputs to be connected to a common bus. When the strobe input is high, both outputs are in a high-impedance state in which both the upper and lower transistors of each totem-pole output are off, and the output neither drives nor loads the bus significantly. When the strobe is low, the outputs are activated and operate as standard TTL totem-pole outputs.

To minimize the possibility that two outputs will attempt to take a common bus to opposite logic levels, the output control circuitry is designed so that the average output disable time is shorter than the average output enable time. The SN54251 and SN74251 have output clamp diodes to attenuate reflections on the bus line.

SN74LS251N

Feature

  • Three-State Versions of '151, 'LS151, 'S151
  • Three State Outputs Interface Directly with System Bus
  • Perform Parallel-to-Serial Conversion
  • Permit Multiplexing from N-Lines to One Line
  • Complementary Outputs Provide True and Inverted Data
  • Fully Compatible with Most TTL Circuits

Description

These monolithic data selectors/multiplexers contain full on-chip binary decoding to select one-of-eight data sources and feature a strobe-controlled three-state output. The strobe must be at a low logic level to enable these devices. The three-state outputs permit a number of outputs to be connected to a common bus. When the strobe input is high, both outputs are in a high-impedance state in which both the upper and lower transistors of each totem-pole output are off, and the output neither drives nor loads the bus significantly. When the strobe is low, the outputs are activated and operate as standard TTL totem-pole outputs.

To minimize the possibility that two outputs will attempt to take a common bus to opposite logic levels, the output control circuitry is designed so that the average output disable time is shorter than the average output enable time. The SN54251 and SN74251 have output clamp diodes to attenuate reflections on the bus line.

SN74LS251N Products

Technical Parameters

  • Product
  • Selectors / Multiplexers
  • Logic Family
  • LS
  • Number of Lines (Input / Output)
  • 8 / 1
  • Propagation Delay Time
  • 28 ns at 5 V
  • Supply Voltage Max
  • 5.25 V
  • Supply Voltage Min
  • 4.75 V
  • Maximum Operating Temperature
  • + 70 C
  • Mounting Style
  • Through Hole
  • Package / Case
  • PDIP-16
  • Packaging
  • Tube
  • Minimum Operating Temperature
  • 0 C
  • Number of Input Lines
  • 8
  • Number of Output Lines
  • 1
  • Operating Temperature Range
  • 0 C to + 70 C
  • Operating Voltage
  • 4.75 V to 5.25 V
  • Factory Pack Quantity
  • 25

SN74LS251N Documents

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  • **icha***
    2020-02-08

    Super quick delivery A+++

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Q: How does Jotrin guarantee that SN74LS251N is the original manufacturer or agent of TI?
We have a professional business development department to strictly test and verify the qualifications of TI original manufacturers and agents. All TI suppliers must pass the qualification review before they can publish their SN74LS251N devices; we pay more attention to the channels and quality of SN74LS251N products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of SN74LS251N chips? Including TI original factory information, Encoders,Decoders,Multiplexers & Demultiplexers application, SN74LS251N pictures?
You can use Jotrin's intelligent search engine, or filter by Semiconductors ; Logic ; Specialty logic category, or find it through Texas Instruments, Inc Information page.
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The TI's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for SN74LS251N, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the SN74LS251N we delivered, we will accept the replacement or return of the SN74LS251N only when all of the below conditions are fulfilled:
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Texas Instruments, Inc

TI
Texas Instruments Incorporated designs and manufactures analog technologies, digital signal processing (DSP) and microcontroller (MCU) semiconductors. TI is a leader in semiconductor solutions for analog and digital embedded and applications processing....
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