器件名称详细搜索
产品SN74HC193TI
描述

The 'HC193 devices are 4-bit synchronous, reversible, up/down binary counters. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincidentally with each other when so instructed by the steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous (ripple-clock) counters. The outputs of the four flip-flops are triggered on a low-to-high-level transition of either count (clock) input (UP or DOWN). The direction of counting is determined by which count input is pulsed while the other count input is high. All four counters are fully programmable; that is, each output may be preset to either level by placing a low on the load (LOAD) input and entering the desired data at the data inputs. The output changes to agree with the data inputs independently of the count pulses. This feature allows the counters to be used as modulo-N dividers simply by modifying the count length with the preset inputs. A clear (CLR) input has been provided that forces all outputs to the low level when a high level is applied. The clear function is independent of the count and LOAD inputs. These counters were designed to be cascaded without the need for external circuitry. The borrow (BO) output produces a low-level pulse while the count is zero (all outputs low) and DOWN is low. Similarly, the carry (CO) output produces a low-level pulse while the count is maximum (9 or 15), and UP is low. The counters then can be cascaded easily by feeding BO and CO to DOWN and UP, respectively, of the succeeding counter.

操作查看详情点击下载购买

目录

04600123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ
1234 >
跳至PAGE
制造商型号分类描述下载
Molex

Molex

0460560005连接器矩形连接器 - 触头conn term mal 18-20awg crmp gold
Molex

Molex

0460560002连接器矩形连接器 - 触头conn term mal 18-20awg crimp tin
Molex

Molex

0460791001连接器背板连接器 - 专用multi-path 4pos power recept
Molex

Molex

0460071106连接器刀片式电源连接器conn hdr 6pos 7.50mm r/a sldr
Molex

Molex

0460071102连接器刀片式电源连接器conn hdr 2pos 7.50mm r/a sldr
Molex

Molex

0460075302连接器刀片式电源连接器conn hdr 2pos 7.50mm r/a sldr
Molex

Molex

0460100411连接器矩形连接器 - 针座,公插针MF plushcs pcb recep hdr 4ckt V2
Molex

Molex

0460110403连接器矩形连接器 - 针座,公插针mini-fit vert bmi hdr asy 4ckt
Molex

Molex

0460101421连接器矩形连接器 - 针座,公插针MF plushcs pcb recep hdr 14ckt V
Molex

Molex

0460811000连接器背板连接器 - 专用multipath 4 blade RA pwr plug
Molex

Molex

0460100621连接器矩形连接器 - 针座,公插针m-f plushcs pcb recep hdr 6ckt
Molex

Molex

0460111003连接器矩形连接器 - 针座,公插针minifit vert bmi hdr asy 10ckt V
Molex

Molex

0460100421连接器矩形连接器 - 针座,公插针m-f plushcs pcb recep hdr 4ckt
Molex

Molex

0460071302连接器刀片式电源连接器conn hdr 2pos 7.50mm r/a sldr
Molex

Molex

0460101022连接器矩形连接器 - 针座,公插针m-f plushcs pcb recep hdr 10ckt
Molex

Molex

0460073103连接器刀片式电源连接器conn hdr 3pos 7.50mm r/a sldr
Molex

Molex

0460073104连接器刀片式电源连接器conn hdr 4pos 7.50mm r/a sldr
Molex

Molex

0460077306连接器刀片式电源连接器conn hdr 6pos 7.50mm r/a sldr
Molex

Molex

0460075306连接器刀片式电源连接器conn hdr 6pos 7.50mm r/a sldr
Molex

Molex

0460550006连接器矩形连接器 - 触头conn term fml 18-20awg crmp gold
Molex

Molex

0460560003连接器矩形连接器 - 触头conn term mal 18-20awg crmp gold
Molex

Molex

0460550008连接器矩形连接器 - 触头conn term fml 18-20awg crmp gold
Molex

Molex

0460791000连接器背板连接器 - 专用multi-path 4pos power recept
Molex

Molex

0460150207连接器矩形连接器 - 针座,公插针mf+ hcs vert hdr DR 2ckt v-2
Molex

Molex

0460812010连接器背板连接器 - 专用multipath 4 blade RA pwr plug
1234 >
跳至PAGE