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74HC/HCT192 View Datasheet(PDF) - Philips Electronics

Part NameDescriptionManufacturer
74HC/HCT192 Presettable synchronous BCD decade up/down counter Philips
Philips Electronics Philips
74HC/HCT192 Datasheet PDF : 13 Pages
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Philips Semiconductors
Presettable synchronous BCD decade
up/down counter
Product specification
74HC/HCT192
FUNCTION TABLE
OPERATING MODE
reset (clear)
parallel load
count up
count down
INPUTS
OUTPUTS
MR PL CPU CPD D0 D1 D2 D3 Q0 Q1 Q2 Q3 TCU TCD
HXX L X X X X L L L L H L
HXX H X X X X L L L L H H
LLX L L L L L L L L L H L
LLX H L L L L L L L L H H
LLL X H X XH
LLH X H X XH
L HH X X X X
Qn = Dn
Qn = Dn
count up
LH
HH
H(2) H
L HH X X X X
count down
H H(3)
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
= LOW-to-HIGH clock transition
2. TCU = CPU at terminal count up (HLLH)
3. TCD = CPD at terminal count down (LLLL)
Fig.4 Functional diagram.
December 1990
5
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