SN54HCT374 - 具有三态输出的八路 D 类边沿触发器

SN54HCT374是TI德州仪器公司的一款D类触发器产品，SN54HCT374是具有三态输出的八路 D 类边沿触发器，本站介绍了SN54HCT374的封装应用图解、特点和优点、功能等，并给出了与SN54HCT374相关的TI元器件型号供参考。

SN54HCT374 - 具有三态输出的八路 D 类边沿触发器 - D类触发器 - 触发器/锁存器/寄存器 - 德州仪器

产品描述

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 ’HCT374 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.

产品特性

Operating Voltage Range of 4.5 V to 5.5 V
High-Current 3-State True Outputs Can Drive 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
Eight D-Type Flip-Flops in a Single Package
Full Parallel Access for Loading

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