SN54ALS174, SN54ALS175, SN54AS174, SN54AS175B
SN74ALS174, SN74ALS175, SN74AS174, SN74AS175B
HEX/QUADRUPLE D-TYPE FLIP-FLOPS WITH CLEAR

SDAS207D - APRIL 1982 - REVISED MAY 1996

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

features

• 'ALS174 and 'AS174 Contain Six Flip-Flops With Single-Rail Outputs
• 'ALS175 and 'AS175B Contain Four Flip-Flops With Double-Rail Outputs
• Buffered Clock and Direct-Clear Inputs
• Applications Include:
  • Buffer/Storage Registers
  • Shift Registers
  • Pattern Generators
• Fully Buffered Outputs for Maximum Isolation From External Disturbances ('AS Only)
• Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

description

These positive-edge-triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic. All have a direct-clear () input. The 'ALS175 and 'AS175B feature complementary outputs from each flip-flop.

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

These circuits are fully compatible for use with most TTL circuits.

The SN54ALS174, SN54ALS175, SN54AS174, and SN54AS175B are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS174, SN74ALS175, SN74AS174, and SN74AS175B are characterized for operation from 0°C to 70°C.