74hct193 NXP Semiconductors, 74hct193 Datasheet - Page 6

• Manufacturer Part Number: 74hct193
• Description: Presettable Synchronous 4-bit Binary Up/down Counter
• Manufacturer: NXP Semiconductors

NXP Semiconductors
6. Functional description
Table 3.
[1]
[2]
[3]
74HC_HCT193_3
Product data sheet
Operating mode
Reset (clear)
Parallel load
Count up
Count down
H = HIGH voltage level
L = LOW voltage level
X = don’t care
TCU = CPU at terminal count up (HHHH)
TCD = CPD at terminal count down (LLLL).
= LOW-to-HIGH clock transition.
Function table
[1]
Inputs
MR
H
H
L
L
L
L
L
L
PL
X
X
L
L
L
L
H
H
CPU CPD D0
X
X
X
X
L
H
H
Rev. 03 — 23 May 2007
L
H
L
H
X
X
H
X
X
L
L
H
H
X
X
Presettable synchronous 4-bit binary up/down counter
D1
X
X
L
L
H
H
X
X
D2
X
X
L
L
H
H
X
X
74HC193; 74HCT193
D3
X
X
L
L
H
H
X
X
Outputs
Q0
L
L
L
L
H
H
count up
count down
L
L
L
L
H
H
Q1
Q2
L
L
L
L
H
H
© NXP B.V. 2007. All rights reserved.
Q3
L
L
L
L
H
H
TCU TCD
H
H
H
H
L
H
H
H
[2]
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L
H
L
H
H
H
H
H
[3]