4位同步向上/向下二进制计数器 4-BIT SYNCHRONOUS UP/DOWN BINARY COUNTERS
description/ordering information
The ’HC191 devices are 4-bit synchronous, reversible, up/down binary counters. Synchronous counting operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when instructed by the steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous ripple-clock counters.
● Wide Operating Voltage Range of 2 V to 6 V
● Outputs Can Drive Up To 10 LSTTL Loads
● Low Power Consumption, 80-µA Max ICC
● Typical tpd = 13 ns
● ±4-mA Output Drive at 5 V
● Low Input Current of 1 µA Max
● Single Down/Up Count-Control Line
● Look-Ahead Circuitry Enhances Speed of Cascaded Counters
● Fully Synchronous in Count Modes
● Asynchronously Presettable With Load Control
电源电压DC 2.00V ~ 6.00V
输出接口数 4
时钟频率 48 MHz
位数 4
电压波节 6.00 V, 5.00 V, 2.00 V
输出电流驱动 -1.00 mA
输入数 4
工作温度Max 85 ℃
工作温度Min -40 ℃
电源电压 2V ~ 6V
电源电压Max 6 V
电源电压Min 2 V
安装方式 Surface Mount
引脚数 16
封装 SOIC-16
封装 SOIC-16
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC版本 2015/06/15
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
SN74HC191DR TI 德州仪器 | 当前型号 | 当前型号 |
SN74HC191D 德州仪器 | 完全替代 | SN74HC191DR和SN74HC191D的区别 |
SN74HC191NSR 德州仪器 | 类似代替 | SN74HC191DR和SN74HC191NSR的区别 |
CD74HC191MT 德州仪器 | 类似代替 | SN74HC191DR和CD74HC191MT的区别 |