74hct193 NXP Semiconductors, 74hct193 Datasheet - Page 7

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

NXP Semiconductors
74HC_HCT193_3
Product data sheet
Fig 8. Typical clear, load and count sequence
(1) Clear overrides load, data and count inputs.
(2) When counting up, the count down clock input (CPD) must be HIGH, when counting down the count up clock input
(CPU) must be HIGH.
Sequence
Clear (reset outputs to zero);
load (preset) to binary thirteen;
count up to fourteen, fifteen, terminal count up, zero, one and two;
count down to one, zero, terminal count down, fifteen, fourteen and thirteen.
CPU
CPD
MR
TCU
TCD
Q0
Q1
Q2
Q3
D0
D1
D2
D3
PL
(1)
(2)
(2)
CLEAR
0
PRESET
13
14
Rev. 03 — 23 May 2007
15
COUNT UP
0
Presettable synchronous 4-bit binary up/down counter
1
2
74HC193; 74HCT193
1
COUNT DOWN
0
15
14
001aag411
© NXP B.V. 2007. All rights reserved.
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