SN74HCT574DWR

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SN74HCT574DWR

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

Packaging

Package | PIN: DW | 20
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $0.70
10-24 $0.62
25-99 $0.56
100-249 $0.48
250-499 $0.43
500-749 $0.34
750-999 $0.26
1000+ $0.22

Features

  • Operating Voltage Range of 4.5 V to 5.5 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
  • Inputs Are TTL-Voltage Compatible
  • Bus-Structured Pinout

Texas Instruments  SN74HCT574DWR

These octal edge-triggered D-type flip-flops feature 3-state outputs designed specifically for bus driving. The ’HCT574 devices 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.