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

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 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

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:2025-12-20 17:13:00
IC供应商 芯片型号 品牌 批号 封装 库存 备注 价格
HIT
25+
DIP16
18000
原厂直接发货进口原装
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
RENESAS/瑞萨
23+
SOP-16
10000
原厂授权一级代理,专业海外优势订货,价格优势、品种
24+
DIP-16
25
RENESAS
DIP
1472
正品原装--自家现货-实单可谈
HIT
22+
DIP-20
1000
全新原装现货!自家库存!
HITACHI
24+
DIP16
5000
全新原装正品,现货销售
HIT
23+
TSSOP
5000
原装正品,假一罚十

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