74HC181 Datasheet, PDF(7/20 Page) NXP Semiconductors

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74HC181 Datasheet, PDF (7/20 Pages) NXP Semiconductors – 4-bit arithmetic logic unit

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Philips Semiconductors

4-bit arithmetic logic unit

Product speciï¬cation

74HC/HCT181

Table 1 SUM MODE TEST

Function inputs S0 = S3 = 4.5 V, M = S1 = S2 = 0 V

INPUT OTHER INPUT, SAME BIT

PARAMETER UNDER

TEST

Apply 4.5 V Apply GND

OTHER DATA INPUTS

Apply 4.5 V

Apply GND

OUTPUT

UNDER

TEST

tPLH/ tPHL

none

remaining A and B

none

remaining B

all A

remaining A and B, Cn

remaining A, Cn

all B

Cn+4

any F or Cn+4

Table 2 DIFFERENTIAL MODE TEST

Function inputs S1 = S2 = 4.5 V, M = S0 = S3 = 0 V

INPUT OTHER INPUT, SAME BIT

PARAMETER UNDER

TEST

Apply 4.5 V Apply GND

OTHER DATA INPUTS

Apply 4.5 V

Apply GND

OUTPUT

UNDER

TEST

tPLH/ tPHL

tPLZ/ tPZL

tPLH/ tPHL

none

remaining A

none

remaining A

none

all A and B

remaining B, Cn

remaining A and B, Cn

remaining B, Cn

remaining A and B, Cn

none

A=B

Cn+4

any F or Cn+4

Table 3 LOGIC MODE TEST

Function inputs M = S1 = S2 = 4.5 V, S0 = S3 = 0 V

INPUT OTHER INPUT, SAME BIT

PARAMETER UNDER

TEST

Apply 4.5 V

Apply GND

OTHER DATA INPUTS

Apply 4.5 V

Apply GND

OUTPUT

UNDER

TEST

tPLH/ tPHL

none

remaining A and B, Cn Fi

1998 Jun 10

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