SN74HC374 Octal Edge-Triggered D-Type Flip-Flops With 3-State Outputs | TI.com

SN74HC374
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Octal Edge-Triggered D-Type Flip-Flops With 3-State Outputs

Octal Edge-Triggered D-Type Flip-Flops With 3-State Outputs - SN74HC374
Datasheet
 

Description

These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The eight flip-flops of the \x92HC374 devices are edge-triggered D-type flip-flops. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels that were set up at the data (D) inputs.

An output-enable (OE) input places 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.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Features

  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current 3-State True Outputs Can
    Drive Up To 15 LSTTL Loads
  • Eight D-Type Flip-Flops in a Single Package
  • Full Parallel Access for Loading
  • Low Power Consumption, 80-µA Max ICC
  • Typical tpd = 14 ns
  • ±6-mA Output Drive at 5 V
  • Low Input Current of 1 µA Max

Parametrics

Compare all products in D-type flip-flop Email Download to Excel
Part number Order Technology Family Input type Output type VCC (Min) (V) VCC (Max) (V) IOL (Max) (mA) IOH (Max) (mA) Rating Package Group
SN74HC374 Order now HC     CMOS     CMOS     2     6     7.8     -7.8     Catalog     PDIP | 20
SOIC | 20
SO | 20
SSOP | 20
TSSOP | 20    
SN54HC374 Samples not available HC     CMOS     CMOS     2     6     7.8     -7.8     Military     CDIP | 20
CFP | 20
LCCC | 20