74HC/HCT574

General description

The 74HC/HCT574 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.

The 74HC/HCT574 are octal D-type flip-flops featuring separate D-type inputs for each flip-flop and non-inverting 3-state outputs for bus oriented applications. A clock (CP) and an output enable (OE) input are common to all flip-flops.

The 8 flip-flops will store the state of their individual D-inputs that meet the set-up and hold time requirements on the LOW-to-HIGH CP transition.
When OE is LOW, the contents of the 8 flip-flops are available at the outputs.
When OE is HIGH, the outputs go to the high impedance OFF-state. Operation of the OE input does not affect the state of the flip-flops.

The '574' is functionally identical to the '564', but has non-inverting outputs.
The '574' is functionally identical to the '374', but has a different pinning.

Features

• 3-state non-inverting outputs for bus oriented applications
• 8-bit positive edge-triggered register
• Common 3-state output enable input
• Independent register and 3-state buffer operation
• Output capability: bus driver
• I_CC category: MSI

Products/packages

Pricing/ordering/availability

Applications

• High-speed disc or tape controller
• Communications buffer.

Technical documents

Support Documents

HCT_USER_GUIDE; HC/T User Guide (1997-11-01)

Parametrics/similar products

Similar products

74HC/HCT574 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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