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CD74HCT251E The ’HC251 and ’HCT251 are 8-channel digital multiplexers with three-state outputs, fabricated with high-speed silicon-gate CMOS technology. Together with the low power consumption of standard CMOS integrated circuits, they possess the ability to drive 10 LSTTL loads. The three-state feature makes them ideally suited for interfacing with bus lines in a bus-oriented system.
This multiplexer features both true (Y) and complement (Y\) outputs as well as an output enable (OE\) input. The OE\ must be at a low logic level to enable this device. When the OE\ input is high, both outputs are in the high-impedance state. When enabled, address information on the data select inputs determines which data input is routed to the Y and Y\ outputs. The ’HCT251 logic family is speed, function, and pin-compatible with the standard ’LS251.
  • CD74HCT251E
  • CD74HCT251E
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Description

The ’HC251 and ’HCT251 are 8-channel digital multiplexers with three-state outputs, fabricated with high-speed silicon-gate CMOS technology. Together with the low power consumption of standard CMOS integrated circuits, they possess the ability to drive 10 LSTTL loads. The three-state feature makes them ideally suited for interfacing with bus lines in a bus-oriented system. This multiplexer features both true (Y) and complement (Y\) outputs as well as an output enable (OE\) input. The OE\ must be at a low logic level to enable this device. When the OE\ input is high, both outputs are in the high-impedance state. When enabled, address information on the data select inputs determines which data input is routed to the Y and Y\ outputs. The ’HCT251 logic family is speed, function, and pin-compatible with the standard ’LS251.

Not found, similar datasheet recommended

Title

High Speed CMOS Logic 8-Input Multiplexer, 3-State

  • ECAD Module
  • Series: 74HCT
  • Brand: Harris
  • Package / Case: PDIP-16
  • Packaging: Tube
  • Part Status: Active
  • Type: Multiplexer
  • Circuit: 1 x 8:1
  • Independent Circuits: 1
  • Current - Output High, Low: 4mA, 4mA
  • Voltage Supply Source: Single Supply
  • Voltage - Supply: 4.5 V ~ 5.5 V
  • Operating Temperature: -55°C ~ 125°C
  • Mounting Type: Through Hole
  • Supplier Device Package: 16-PDIP

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ECAD Module

Product Attributes

  • Description: The CD74HCT251E is a high-speed CMOS 8-input multiplexer fabricated with silicon gate C2MOS technology. Features: - Low power consumption - High speed - Low noise - High noise immunity - Low input current Applications: - Data and address multiplexing - Data routing - Data selection - Signal gating - Analog and digital switching (For reference only)

Preview of the first 3 pages of the data sheet

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  • CD74HCT251E's pdf picture 2
  • CD74HCT251E's pdf picture 3

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Data sheet acquired from Harris Semiconductor SCHS169C
[ /Title HCT25 1) /Subject (High Speed CMOS Logic 8-Input Multiplexer; Three-
Features
Description

Selects One of Eight Binary Data Inputs Three-State Output Capability True and Complement Outputs Typical (Data to Output) Propagation Delay 14ns at

- Standard Outputs. 10 LSTTL Loads - Bus Driver Outputs. 15 LSTTL Loads Wide Operating Temperature Range. to 125oC Balanced Propagation Delay and Transition Times Significant Power Reduction Compared to LSTTL Logic ICs Alternate Source is Philips

The 'HC251 and 'HCT251 are 8-channel digital multiplexers with three-state outputs, fabricated with high-speed silicongate CMOS technology. Together with the low power consumption of standard CMOS integrated circuits, they possess the ability to drive 10 LSTTL loads. The three-state feature makes them ideally suited for interfacing with bus lines in a bus-oriented system.

This multiplexer features both true (Y) and complement (Y) outputs as well as an output enable (OE) input. The OE must at a low logic level to enable this device. When the OE input is high, both outputs are in the high-impedance state. When enabled, address information on the data select inputs determines which data input is routed to the Y and Y outputs. The 'HCT251 logic family is speed, function, and pin-compatible with the standard 'LS251.

HCT Types to 5.5V Operation - Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH = 2V (Min) - CMOS Input Compatibility, 1µA at VOL, VOH

PACKAGE 16 Ld CERDIP 16 Ld CERDIP 16 Ld PDIP 16 Ld SOIC 16 Ld SOIC 16 Ld SOIC

NOTE: When ordering, use the entire part number. The suffix 96 denotes tape and reel. The suffix T denotes a small-quantity reel of 250.

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

H = High Voltage Level, L = Low Voltage Level, X = Don't Care, Z = High Impedance (Off), I7 = the level of the respective input.

DC Supply Voltage, VCC. 7V DC Input Diode Current, IIK
For VO < VCC +0.5V.±25mA DC Output Source or Sink Current per Output Pin, IO

M (SOIC) Package. 73 Maximum Junction Temperature. 150oC Maximum Storage Temperature to 150oC Maximum Lead Temperature (Soldering 10s). 300oC

Temperature Range (TA). to 125oC Supply Voltage Range, VCC

to 6V HCT 5.5V DC Input or Output Voltage, VI, VO. 0V to VCC Input Rise and Fall Time 2V. 1000ns (Max) 4.5V. 500ns (Max) 6V. 400ns (Max)

CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTE:

1. The package thermal impedance is calculated in accordance with JESD 51-7.
PARAMETER HC TYPES High Level Input Voltage
High Level Output Voltage CMOS Loads

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    • CD74HCT251E The ’HC251 and ’HCT251 are 8-channel digital multiplexers with three-state outputs, fabricated with high-speed silicon-gate CMOS technology. Together with the low power consumption of standard CMOS integrated circuits, they possess the ability to drive 10 LSTTL loads. The three-state feature makes them ideally suited for interfacing with bus lines in a bus-oriented system. This multiplexer features both true (Y) and complement (Y\) outputs as well as an output enable (OE\) input. The OE\ must be at a low logic level to enable this device. When the OE\ input is high, both outputs are in the high-impedance state. When enabled, address information on the data select inputs determines which data input is routed to the Y and Y\ outputs. The ’HCT251 logic family is speed, function, and pin-compatible with the standard ’LS251.
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      CD74HCT251E

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