型号 功能描述 生产厂家 企业 LOGO 操作
HD74LS190FPEL

Synchronous Up / Down Decade Counter (signal clock line)

Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident 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) counte

RENESAS

瑞萨

Synchronous Up/Down Decade Counters(single clock line)

Synchronous Up/Down Decade Counters(single clock line) Synchronous operation is provided by having all flip-flops clocked simultaneously so that the output change coincident with each other when so instructed by the steering logic. This mode of operation eliminates the output counting spikes norm

HitachiHitachi Semiconductor

日立日立公司

PRESETTABLE BCD/DECADE UP/DOWN COUNTERS PRESETTABLE 4-BIT BINARY UP/DOWN COUNTERS

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 transit

Motorola

摩托罗拉

PRESETTABLE BCD/DECADE UP/DOWN COUNTERS PRESETTABLE 4-BIT BINARY UP/DOWN COUNTERS

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 transit

Motorola

摩托罗拉

SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL

文件:512.63 Kbytes Page:14 Pages

TI

德州仪器

SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL

文件:1.06224 Mbytes Page:16 Pages

TI

德州仪器

更新时间:2025-10-19 22:59:00
IC供应商 芯片型号 品牌 批号 封装 库存 备注 价格
HITACHI/日立
24+
NA/
320
优势代理渠道,原装正品,可全系列订货开增值税票
RENESAS(瑞萨)/IDT
24+
7350
现货供应,当天可交货!免费送样,原厂技术支持!!!
HIT
25+23+
DIP
35772
绝对原装正品全新进口深圳现货
HIT
25+
DIP
3200
全新原装、诚信经营、公司现货销售
HIT
68500
一级代理 原装正品假一罚十价格优势长期供货
24+
DIP-16
25
HIT
22+
DIP-20
1000
全新原装现货!自家库存!
HIT
23+
TSSOP
5000
原装正品,假一罚十
HIT
25+
DIP16
18000
原厂直接发货进口原装
HIT
18+
DIP-16
85600
保证进口原装可开17%增值税发票

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