SN74HC574 (ACTIVE)

Octal Edge-Triggered D-Type Flip-Flops With 3-State Outputs

Octal Edge-Triggered D-Type Flip-Flops With 3-State Outputs - SN74HC574
Datasheet
 

Description

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

The eight flip-flops enter data on the low-to-high transition of the clock (CLK) input.

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 increased drive provide the capability to drive bus lines without interface or pullup components.

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

Features

  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current 3-State Noninverting Outputs Drive Bus Lines Directly or Up To 15 LSTTL Loads
  • Low Power Consumption, 80-µA Max ICC
  • Typical tpd = 22 ns
  • ±6-mA Output Drive at 5 V
  • Low Input Current of 1 µA Max
  • Bus-Structured Pinout

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Parametrics Compare all products in D-Type Flip-Flop

 
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)
Output Drive (IOL/IOH) (Max) (mA)
3-State Output
Rating
Operating Temperature Range (C)
Pin/Package
SN74HC574 SN54HC574
HC    HC   
2    2   
6    6   
8    8   
3.3
5   
3.3
5   
28    28   
0.08    0.08   
38    38   
7.8/-7.8    7.8/-7.8   
Yes    Yes   
Catalog    Military   
-40 to 85    -55 to 125   
20PDIP
20SO
20SOIC
20SSOP
20TSSOP   
20CDIP
20CFP
20LCCC   

Other qualified versions of SN74HC574

Version Part Number Definition
Military SN54HC574 QML certified for Military and Defense Applications