SN54HCT373 - 具有三态输出的八路 D 类透明锁存器

SN54HCT373是TI德州仪器公司的一款D类锁存器产品，SN54HCT373是具有三态输出的八路 D 类透明锁存器，本站介绍了SN54HCT373的封装应用图解、特点和优点、功能等，并给出了与SN54HCT373相关的TI元器件型号供参考。

SN54HCT373 - 具有三态输出的八路 D 类透明锁存器 - D类锁存器 - 触发器/锁存器/寄存器 - 德州仪器

产品描述

These 8-bit latches 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 latches of the ’HCT373 devices are transparent D-type latches. While the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is taken low, the Q outputs are latched at the levels that were set up at the 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 latches. Old data can be retained or new data can be entered while the outputs are off.

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 = 21 ns
±6-mA Output Drive at 5 V
Low Input Current of 1 µA Max
Inputs Are TTL-Voltage Compatible
Eight High-Current Latches in a Single Package
Full Parallel Access for Loading

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