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74HCT191DB中文资料PDF规格书
74HCT191DB规格书详情
GENERAL DESCRIPTION
The 74HC/HCT191 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.
The 74HC/HCT191 are asynchronously presettable 4-bit binary up/down counters. They contain four master/slave flip-flops with internal gating and steering logic to provide asynchronous preset and synchronous count-up and count-down operation.
FEATURES
• Synchronous reversible counting
• Asynchronous parallel load
• Count enable control for synchronous expansion
• Single up/down control input
• Output capability: standard
• ICC category: MSI
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
NXP |
23+ |
20000 |
全新、原装、现货 |
询价 | |||
NXP |
22+ |
16DIP |
9000 |
原厂渠道,现货配单 |
询价 | ||
NXP |
21+ |
16DIP |
13880 |
公司只售原装,支持实单 |
询价 | ||
NXP/恩智浦 |
2023+ |
DIP16 |
6895 |
原厂全新正品旗舰店优势现货 |
询价 | ||
PHILIPS/飞利浦 |
22+ |
DIP |
9600 |
原装现货,优势供应,支持实单! |
询价 | ||
NXP |
22+ |
SOP |
9852 |
只做原装正品现货!或订货假一赔十! |
询价 | ||
NXP/恩智浦 |
22 |
DIP16 |
15000 |
3月31原装,微信报价 |
询价 | ||
NXP |
22+ |
NA |
45000 |
加我QQ或微信咨询更多详细信息, |
询价 | ||
NXP USA Inc. |
21+ |
16-DIP |
56200 |
一级代理/放心采购 |
询价 | ||
PHILIPS |
23+ |
SOP |
12300 |
询价 |