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.

74HCT193屬于集成電路（IC） > 計數(shù)器，除法器。恩智浦半導體公司制造生產(chǎn)的74HCT193計數(shù)器，除法器計數(shù)器和除法器 IC 是數(shù)字邏輯器件，可對輸入發(fā)生的邏輯轉(zhuǎn)換進行計數(shù)，然后使用多個并行輸出重新發(fā)送累加的計數(shù)，和/或生成單個輸出信號轉(zhuǎn)換，從而對應用某些整數(shù)數(shù)量輸入信號轉(zhuǎn)換進行響應。除了簡單的事件計數(shù)，它們還可用于各種頻率合成應用。