SN74LS181N 查看數據表（PDF） - Motorola => Freescale

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SN74LS181N

4-BIT ARITHMETIC LOGIC UNIT

Motorola => Freescale 

SN54 / 74LS181

DIFF MODE TEST TABLE II

Parameter

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

Input

Under

Test

A

B

Al

Bl

A

B

A

B

A

B

A

B

Cn

Other Input

Same Bit

Apply

4.5 V

Apply

GND

None

B

A

None

None

Al

None

Bl

None

B

A

None

B

None

None

A

None

B

A

None

B

None

None

A

None

None

FUNCTION INPUTS: S1 = S2 = 4.5 V, S0 = S3 = M = 0 V

Other Data Inputs

Apply

4.5 V

Apply

GND

Remaining

A

Remaining

A

Remaining

B, Cn

Remaining

B, Cn

None

None

None

None

Remaining

A

Remaining

A

None

None

All

A and B

Remaining

B, Cn

Remaining

B, Cn

Remaining

A

Remaining

A

Remaining

A and B, Cn

Remaining

A and B, Cn

Remaining

A and Bl, Cn

Remaining

A and B, Cn

Remaining

B, Cn

Remaining

B, Cn

Remaining

A and B, Cn

Remaining

A and B, Cn

None

Output

Under

Test

Fl

Fl

Fl+1

Fl+1

P

P

G

G

A=B

A=B

cn+4

Cn+4

Cn+4

LOGIC MODE TEST TABLE III

Parameter

tPLH

tPHL

tPLH

tPHL

Input

Under

Test

A

B

Other Input

Same Bit

Apply

4.5 V

Apply

GND

None

B

None

A

Other Data Inputs

Apply

4.5 V

Apply

GND

None

None

Remaining

A and B, Cn

Remaining

A and B, Cn

Output

Under

Test

Any F

Any F

Function Inputs

S1 = S2 = M = 4.5 V

S0 = S3 = 0 V

S1 = S2 = M = 4.5 V

S0 = S3 = 0 V

FAST AND LS TTL DATA

5-338

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