SN74ALS874B Dual 4-Bit D-Type Edge-Triggered Flip-Flops With 3-State Outputs | TI.com

SN74ALS874B
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Dual 4-Bit D-Type Edge-Triggered Flip-Flops With 3-State Outputs

Dual 4-Bit D-Type Edge-Triggered Flip-Flops With 3-State Outputs - SN74ALS874B
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 Input type Output type VCC (Min) (V) VCC (Max) (V) IOL (Max) (mA) IOH (Max) (mA) Rating Package Group
SN74ALS874B Order now ALS     TTL     TTL     4.5     5.5     24     -2.6     Catalog     SOIC | 24    
SN54ALS874B Samples not available ALS     TTL     TTL     4.5     5.5     24     -2.6     Military     CDIP | 24