SN74AS874 Dual 4-Bit D-Type Edge-Triggered Flip-Flops | TI.com

SN74AS874 (ACTIVE) Dual 4-Bit D-Type Edge-Triggered Flip-Flops

Dual 4-Bit D-Type Edge-Triggered Flip-Flops - SN74AS874
Datasheet
 

Description

These dual 4-bit D-type edge-triggered flip-flops feature 3-state outputs designed specifically as bus drivers. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The edge-triggered flip-flops enter data on the low-to-high transition of the clock (CLK) input. The SN54ALS874B, SN74ALS874B, and SN74AS874 have clear () inputs and noninverting Q outputs. The SN74ALS876A and SN74AS876 have preset () inputs and inverting Q\ outputs; taking low causes the four Q or Q\ outputs to go low independently of the clock.

The SN54ALS874B is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS874B, SN74ALS876A, SN74AS874, and SN74AS876 devices are characterized for operation from 0°C to 70°C.

Features

  • 3-State Buffer-Type Outputs Drive Bus Lines Directly
  • Bus-Structured Pinout
  • Choice of True or Inverting Logic
    • SN54ALS874B, SN74ALS874B, SN74AS874 Have True Outputs
    • SN74ALS876A, SN74AS876 Have Inverting Outputs
  • Asynchronous Clear
  • Package Options Include Plastic Small-Outline (DW) Packages, Plastic (FN) and Ceramic (FK) Chip Carriers, and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs

 

Parametrics

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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Bits (#) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) IOL (Max) (mA) IOH (Max) (mA) 3-state output Rating Operating temperature range (C)
SN74AS874 Order now AS     4.5     5.5     8     5     125     160     10.5     48     -15     Yes     Catalog     0 to 70