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SN54LS191J规格书详情
PRESETTABLE BCD/DECADE UP/DOWN COUNTERS
PRESETTABLE 4-BIT BINARY UP/DOWN COUNTERS
The SN54/74LS190 is a synchronous UP/DOWN BCD Decade (8421) Counter and the SN54/74LS191 is a synchronous UP/DOWN Modulo-16 Binary Counter. State changes of the counters are synchronous with the LOW-to-HIGH transition of the Clock Pulse input.
An asynchronous Parallel Load (PL) input overrides counting and loads the data present on the Pn inputs into the flip-flops, which makes it possible to use the circuits as programmable counters. A Count Enable (CE) input serves as the carry /borrow input in multi-stage counters. An Up/Down Count Control (U/D) input determines whether a circuit counts up or down. A Terminal Count (TC) output and a Ripple Clock (RC) output provide overflow/underflow indication and make possible a variety of methods for generating carry/borrow signals in multistage counter applications.
• Low Power . . . 90 mW Typical Dissipation
• High Speed . . . 25 MHz Typical Count Frequency
• Synchronous Counting
• Asynchronous Parallel Load
• Individual Preset Inputs
• Count Enable and Up/Down Control Inputs
• Cascadable
• Input Clamp Diodes Limit High Speed Termination Effects
产品属性
- 型号:
SN54LS191J
- 制造商:
Texas Instruments
- 功能描述:
Counter Single 4-Bit Async Binary UP/Down 16-Pin CDIP Tube
- 制造商:
Rochester Electronics LLC
- 功能描述:
- Bulk
- 功能描述:
COUNTER SGL 4BIT ASYNC BINARY UP/DOWN 16CDIP - Rail/Tube
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
TI |
23+ |
DIP |
607 |
询价 | |||
TI/德州仪器 |
23+ |
CDIP |
724 |
只供应原装正品 欢迎询价 |
询价 | ||
TI/德州仪器 |
21+ |
DIP |
5000 |
全新原装现货 价格优势 |
询价 | ||
23+ |
N/A |
76800 |
一级代理放心采购 |
询价 | |||
TI/德州仪器 |
22+ |
CDIP |
12245 |
现货,原厂原装假一罚十! |
询价 | ||
TI/德州仪器 |
21+ |
CDIP16 |
610880 |
本公司只售原装 支持实单 |
询价 | ||
TI |
2023+ |
CDIP16 |
5800 |
进口原装,现货热卖 |
询价 | ||
TI |
22+ |
3378 |
绝对原装公司现货供应!价格优势 |
询价 | |||
TI |
19+ |
SSSP |
2539 |
原厂代理渠道,每一颗芯片都可追溯原厂; |
询价 | ||
23+ |
N/A |
76800 |
一级代理放心采购 |
询价 |