CY74FCT191T - 可预设置的同步 4 位加/减二进制计数器

CY74FCT191T是TI德州仪器公司的一款计数器/算术/奇偶校验功能产品，CY74FCT191T是可预设置的同步 4 位加/减二进制计数器，本站介绍了CY74FCT191T的封装应用图解、特点和优点、功能等，并给出了与CY74FCT191T相关的TI元器件型号供参考。

CY74FCT191T - 可预设置的同步 4 位加/减二进制计数器 - 计数器/算术/奇偶校验功能 - 特殊逻辑 - 德州仪器

产品描述

The CY74FCT191T is a reversible modulo-16 binary counter, featuring synchronous counting and asynchronous presetting. The preset allows the CY74FCT191T to be used in programmable dividers. The count enable input, terminal count output, and ripple-clock output make possible a variety of methods of implementing multiusage counters. In the counting modes, state changes are initiated by the rising edge of the clock.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

产品特性

Function, Pinout, and Drive Compatible With FCT and F Logic
Reduced VOH (Typically = 3.3 V) Versions of Equivalent FCT Functions
Edge-Rate Control Circuitry for Significantly Improved Noise Characteristics
Ioff Supports Partial-Power-Down Mode Operation
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
Matched Rise and Fall Times
64-mA Output Sink Current 32-mA Output Source Current

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