SN54HCT273, SN74HCT273
OCTAL D-TYPE FLIP-FLOPS
WITH CLEAR

SCLS068C - NOVEMBER 1988 - REVISED MAY 1997

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features

• Inputs Are TTL-Voltage Compatible
• Contain Eight D-Type Flip-Flops
• Direct Clear Input
• Applications Include:
  • Buffer/Storage Registers
  • Shift Registers
  • Pattern Generators
• Package Options Include Plastic Small-Outline (DW) and Ceramic Flat (W) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

   

description

These devices are positive-edge-triggered D-type flip-flops with a common enable input. The 'HCT273 are similar to the 'HCT377, but feature a common clear enable () input instead of a latched clock.

Information at the data (D) inputs meeting the setup time requirements is transferred to the Q outputs on the positive-going edge of the clock (CLK) pulse. Clock triggering occurs at a particular voltage level and is not directly related to the positive-going pulse. When CLK is at either the high or low level, the D input has no effect at the output. The circuits are designed to prevent false clocking by transitions at.

The SN54HCT273 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74HCT273 is characterized for operation from -40°C to 85°C.