General description

The 74HC193; 74HCT193 is a 4-bit synchronous binary up/down counter. Separate up/down clocks, CPU and CPD respectively, simplify operation. The outputs change state synchronously with the LOW-to-HIGH transition of either clock input. If the CPU clock is pulsed while CPD is held HIGH, the device will count up. If the CPD clock is pulsed while CPU is held HIGH, the device will count down. Only one clock input can be held HIGH at any time to guarantee predictable behaviour.

Features and benefits

■ Input levels:

♦ For 74HC193: CMOS level

♦ For 74HCT193: TTL level

■ Synchronous reversible 4-bit binary counting

■ Asynchronous parallel load

■ Asynchronous reset

■ Expandable without external logic

■ Complies with JEDEC standard no. 7A

■ ESD protection:

♦ HBM JESD22-A114F exceeds 2000 V

♦ MM JESD22-A115-A exceeds 200 V.

■ Multiple package options

■ Specified from -40 °C to +85 °C and -40 °C to +125 °C.

74HCT193N属于集成电路（IC） > 计数器，除法器。恩智浦半导体公司制造生产的74HCT193N计数器，除法器计数器和除法器 IC 是数字逻辑器件，可对输入发生的逻辑转换进行计数，然后使用多个并行输出重新发送累加的计数，和/或生成单个输出信号转换，从而对应用某些整数数量输入信号转换进行响应。除了简单的事件计数，它们还可用于各种频率合成应用。