型号 功能描述 生产厂家 企业 LOGO 操作
SN74LS191DR.A

SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL

Counts 8-4-2-1 BCD or Binary Single Down/Up Count Control Line Count Enable Control Input Ripple Clock Output for Cascading Asynchronously Presettable with Load Control Parallel Outputs Cascadable for n-Bit Applications

TI

德州仪器

Synchronous 4-Bit Up/Down Counter with Mode Control

General Description The DM74LS191 circuit is a synchronous, reversible, up/down counter. Synchronous operation is provided by having all flip-flops clocked simultaneously, so that the outputs change simultaneously when so instructed by the steering logic. This mode of operation eliminates the out

FAIRCHILD

仙童半导体

Synchronous Up/Down 4-bit Binary Counters(single clock line)

● Quadrupie 2-Input Positive NAND Gates ● Quadruple 2-Input Positive NAND Gates (with Open Collector Output) (Continue....)

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 4-Bit Up/Down Counter with Mode Control

General Description The DM74LS191 circuit is a synchronous, reversible, up/down counter. Synchronous operation is provided by having all flip-flops clocked simultaneously, so that the outputs change simultaneously when so instructed by the steering logic. This mode of operation eliminates the out

FAIRCHILD

仙童半导体

Synchronous 4-Bit Up/Down Counters with Mode Control

文件:174.74 Kbytes Page:8 Pages

NSC

国半

更新时间:2026-3-1 21:02:00
IC供应商 芯片型号 品牌 批号 封装 库存 备注 价格
TI/德州仪器
2023+
DIP16
6000
一级代理优势现货,全新正品直营店
MOTOROLA
22+
DIP-16
3000
原装正品,支持实单
TI
25+
SOIC14
4500
全新原装、诚信经营、公司现货销售!
Texas Instruments
24+25+
16500
全新原厂原装现货!受权代理!可送样可提供技术支持!
SN74LS191N
25+
87
87
3
2450+
DIP16
9850
只做原厂原装正品现货或订货假一赔十!
24+
3000
自己现货
TI
23+
DIP16
5000
原装正品,假一罚十
TI
18+
DIP-16
85600
保证进口原装可开17%增值税发票
TI(德州仪器)
25+
PDIP16
1493
原装现货,免费供样,技术支持,原厂对接

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