SN74AHCT374 Octal D-type Edge-Triggered Flip-Flops With 3-State Outputs | TI.com

SN74AHCT374 (ACTIVE) Octal D-type Edge-Triggered Flip-Flops With 3-State Outputs

Octal D-type Edge-Triggered Flip-Flops With 3-State Outputs - SN74AHCT374
Datasheet
 

Description

The ’AHCT374 devices are octal edge-triggered D-type flip-flops that feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. This device is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels of the data (D) inputs.

A buffered output-enable (OE)\ input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus lines without interface or pullup components.

OE\ does not affect internal operations of the flip-flop. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

Features

  • Inputs Are TTL-Voltage Compatible
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

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)
SN74AHCT374 Order now AHCT     4.5     5.5     8     5     70     0.04     11.5     8     -8     Yes     Catalog     -40 to 85    
SN54AHCT374 Samples not available AHCT     4.5     5.5     8     5     70     0.04     11.5     8     -8     Yes     Military     -55 to 125