DM5490 datasheet(6/10 Pages) NSC | Decade and Binary Counters

6 page

Function Tables (Note D)

90A

BCD Count Sequence

(See Note A)

Count

Outputs

90A

BCD Bi-Quinary (5-2)

(See Note B)

Count

Outputs

LLL

LHL

HLH

93A

Count Sequence

(See Note C)

Count

Outputs

90A

ResetCount Function Table

Reset Inputs

Outputs

R0(1)

R0(2)

R9(1)

R9(2)

COUNT

93A

ResetCount Function Table

Reset Inputs

Outputs

R0(1)

R0(2)

COUNT

Note A

Output QA is connected to input B for BCD count

Note B

Output QD is connected to input A for bi-quinary count

Note C

Output QA is connected to input B

Note D

H e High Level L e Low Level X e Don’t Care

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