SN74AHC16373DGGR集成电路（IC）的锁存器规格书PDF中文资料

SN74AHC16373DGGR属于集成电路（IC）的锁存器。由美国德州仪器公司制造生产的SN74AHC16373DGGR锁存器锁存器是类似于触发器的基本数字存储设备，但是不同之处在于，在锁存使能（或类似命名）信号处于有效逻辑状态的任何时间，保持的逻辑状态都可以改变。“透明”锁存器还允许设备输出在锁存使能信号有效时反映输入的当前状态，而相反的是，状态仅在保持状态已固定时改变。

Members of the Texas Instruments

WidebusE Family

EPICE (Enhanced-Performance Implanted

CMOS) Process

Operating Range 2-V to 5.5-V VCC

Distributed VCC and GND Pins Minimize

High-Speed Switching Noise

Flow-Through Architecture Optimizes PCB

Layout

Latch-Up Performance Exceeds 250 mA Per

JESD 17

ESD Protection Exceeds 2000 V Per

MIL-STD-883, Method 3015; Exceeds 200 V

Using Machine Model (C = 200 pF, R = 0)

Package Options Include Plastic Shrink

Small-Outline (DL), Thin Shrink

Small-Outline (DGG), and Thin Very

Small-Outline (DGV) Packages and 380-mil

Fine-Pitch Ceramic Flat (WD) Package

Using 25-mil Center-to-Center Spacings

description

The ’AHC16373 devices are 16-bit transparent

D-type latches with 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.

These devices can be used as two 8-bit latches or one 16-bit latch. When 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 at the

D inputs.

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 the increased drive provide the capability to drive bus

lines without need for interface or pullup components.

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.

OE does not affect internal operations of the latch. Old data can be retained or new data can be entered while

the outputs are in the high-impedance state.

The SN54AHC16373 is characterized for operation over the full military temperature range of –55°C to 125°C.

The SN74AHC16373 is characterized for operation from –40°C to 85°C.