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CD74HC243

Features: • Typical Propagation Delay (A to B, B to A) of 7ns at VCC = 5V, CL = 15pF, TA = 25• Three-State Outputs• Buffered Inputs• Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . ...

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SeekIC No. : 004312001 Detail

CD74HC243: Features: • Typical Propagation Delay (A to B, B to A) of 7ns at VCC = 5V, CL = 15pF, TA = 25• Three-State Outputs• Buffered Inputs• Fanout (Over Temperature Range) - Standar...

CD74HC243 Data Sheet

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Part Number:
CD74HC243
Supply Ability:
5000

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  • 1~5000
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  • Negotiable
  • Processing time
  • 15 Days
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Product Details

Description



Features:

• Typical Propagation Delay (A to B, B to A) of 7ns at VCC = 5V, CL = 15pF, TA = 25
• Three-State Outputs
• Buffered Inputs
• 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: NIL = 30%, NIH = 30% of VCC at 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, Il £ 1mA at VOL, VOH


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 . . . . . . . . . . . . . . . . . . . . . . . ±70mA


Description

The CD74HCT242, 'HC243 and 'HCT243 silicon-gate CMOS three-state bidirectional 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. CD74HC243 can drive 15 LSTTL loads.

The CD74HCT242 is an inverting buffer; the 'HC243 and 'HCT243 are non-inverting buffers. The states of the output enables (OEB, OEA) determine both the direction of flow (A to B, B to A), and the three-state mode.




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