同步4位加/减十进制计数器。同步4位加/减二进制计数器 Synchronous 4-Bit Up/Down Decade Counter . Synchronous 4-Bit Up/Down Binary Counter
General Description
The MM74C192 and MM74C193 up/down counters are monolithic complementary MOS CMOS integrated circuits. The MM74C192 is a BCD counter, while the MM74C193 is a binary counter.
Counting up and counting down is performed by two count inputs, one being held high while the other is clocked. The outputs change on the positive-going transition of this clock.
Features
■ High noise margin: 1V guaranteed
■ Tenth power TTL compatible: Drive 2 LPTTL loads
■ Wide supply range: 3V to 15V
■ Carry and borrow outputs for N-bit cascading
■ Asynchronous clear
■ High noise immunity: 0.45 VCC typ.
| 型号 | 品牌 | 下载 |
|---|---|---|
| MM74C192N | Fairchild 飞兆/仙童 | 下载 |
| MM74HCT245WM | Fairchild 飞兆/仙童 | 下载 |
| MM74HC245AWM | Fairchild 飞兆/仙童 | 下载 |
| MM74HC688WMX | National Semiconductor 美国国家半导体 | 下载 |
| MM74HC138M | Fairchild 飞兆/仙童 | 下载 |
| MM74HC273WM | Fairchild 飞兆/仙童 | 下载 |
| MM74HC574WM | Fairchild 飞兆/仙童 | 下载 |
| MM74HC74AM | Fairchild 飞兆/仙童 | 下载 |
| MM74HC164M | Fairchild 飞兆/仙童 | 下载 |
| MM74HC74AMX | Fairchild 飞兆/仙童 | 下载 |
| MM74HC574WMX | Fairchild 飞兆/仙童 | 下载 |