100336SCX

更新时间： 2024-01-21 09:58:13

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		移位寄存器计数器
页数	文件大小	规格书
14页	152K
描述
Counter/Shift Register

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数据手册

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100336SCX 数据手册

Function Select Table

Pin Descriptions

S₂

S₁

S₀

Function

Parallel Load

Pin Names

Description

Clock Pulse Input

CEP

Count Enable Parallel Input (Active LOW)

Serial Data Input/Count Enable

Trickle Input (Active LOW)

Select Inputs

Complement

Shift Left

Shift Right

Count Down

Clear

D₀/CET

S₀–S₂

Master Reset Input

P₀–P₃

D₃

Preset Inputs

Count Up

Hold

Serial Data Input

Terminal Count Output

Data Outputs

Q₀–Q₃

Complementary Data Outputs

Truth Table

₀= LSB

Inputs

Outputs

MR S₂S₁S₀CEP D₀/CET D₃CP Q₃Q₂Q₁Q₀

Mode

P₃P₂P₁P₀

Preset (Parallel Load)

Q₃Q₂Q₁Q₀

D₃Q₃Q₂Q₁

Invert

D₃

Shift to LSB

Q₂Q₁Q₀D₀Q₃(Note 1) Shift to MSB

(Q_0–3) minus 1

Q₃Q₂Q₁Q₀

Count Down

Count Down with CEP not active

Count Down with CET not active

Clear

(Q_0–3) plus 1

Q₃Q₂Q₁Q₀

Count Up

Count Up with CEP not active

Count Up with CET not active

Hold

Asynchronous

Master Reset

1 = L if Q₀–Q₃= LLLL

H if Q₀–Q₃≠ LLLL

2 = L if Q₀–Q₃= HHHH

H if Q₀–Q₃≠ HHHH

H = HIGH Voltage Level

L = LOW Voltage Level

X = Don't Care

= LOW-to-HIGH Transition

Note 1: Before the clock, TC is Q₃

After the clock, TC is Q₂

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