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CD54HCT640

Features: •Buffered Inputs•Three-State Outputs•Applications in Multiple-Data-Bus Architecture•Fanout (Over Temperature Range)-Standard Outputs. . . . . . . . . . . . . . .10 LSTTL Loads-Bus Driver Outputs . . . . . . . . . . . . .15 LSTTL Loads•Wide Operating Temperat...

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CD54HCT640: Features: •Buffered Inputs•Three-State Outputs•Applications in Multiple-Data-Bus Architecture•Fanout (Over Temperature Range)-Standard Outputs. . . . . . . . . . . . . . .10 ...

CD54HCT640 Data Sheet

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Part Number:
CD54HCT640
Supply Ability:
5000

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  • 1~5000
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  • 15 Days
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Product Details

Description



Features:

•Buffered Inputs
•Three-State Outputs
•Applications in Multiple-Data-Bus Architecture
•Fanout (Over Temperature Range)
-Standard Outputs. . . . . . . . . . . . . . .10 LSTTL Loads
-Bus Driver Outputs . . . . . . . . . . . . .15 LSTTL Loads
•Wide Operating Temperature Range . . .-55oC to 125oC
•Balanced Propagation Delay and Transition Times
•Significant Power Reduction Compared to LSTTLLogic ICs
•HC Types
-2V to 6V Operation
-High Noise Immunity: NIL = 30%, NIH = 30% of VCCat VCC = 5V
•HCT Types
-4.5V to 5.5V Operation
-Direct LSTTL Input Logic Compatibility,VIL= 0.8V (Max), VIH = 2V (Min)
-CMOS Input Compatibility, Il1µA at VOL, VOH


Application

Amplifiers                amplifier.ti.com               Audio
Data Converters     dataconverter.ti.com      Automotive
DSP                         dsp.ti.com                      Broadband
Interface                 interface.ti.com              Digital Control
Logic                       logic.ti.com                     Military
Power Mgmt            power.ti.com                 Optical Networking
Microcontrollers       microcontroller.ti.com     Security
                                                                      Telephony
                                                                      Video & Imaging
                                                                      Wireless


Pinout

Connection Diagram


Specifications

DC Supply Voltage, VCC. . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V
DC Input Diode Current, IIK
For VI < -0.5V or VI > VCC + 0.5V. . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK
For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . ±20mA
DC Drain Current, per Output, IO
For -0.5V < VO < VCC + 0.5V. . . . . . . . . . . . . . . . . . . . . . . . .±35mA
DC Output Source or Sink Current per Output Pin, IO
For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA
DC VCC or Ground Current, ICC . . . . . . . . . . . . . . . . . . . . . . ±50mA




Description

The'HC640 and'HCT640 silicon-gate CMOSthree-statebidirectional inverting and non-inverting buffers are intended for two-way asynchronous communication between data buses.They have high drive current outputs which enable high-speed operation when driving large bus capacitances. These circuits possess the low power dissipation of CMOS circuits,and have speeds comparable to low power Schottky TTL circuits.They can drive 15 LSTTL loads.The'HC640 and 'HCT640 are inverting buffers.

The CD54HCT640 direction of data flow(AtoB,BtoA) is controlled by the DIR input.

Outputs are enabled by a low on the Output Enable input (OE);a high OE puts CD54HCT640 in the high impedance mode.




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