HEF40192BD PHILIPS [NXP Semiconductors], HEF40192BD Datasheet - Page 2

• Manufacturer Part Number: HEF40192BD
• Description: 4-bit up/down decade counter
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
DESCRIPTION
The HEF40192B is a 4-bit synchronous up/down decade
counter. The counter has a count-up clock input (CP
count-down clock input (CP
load input (PL), four parallel data inputs (P
asynchronous master reset input (MR), four counter
outputs (O
(carry) output (TC
count-down (borrow) output (TC
The counter outputs change state on the LOW to HIGH
transition of either clock input. However, for correct
PINNING
January 1995
PL
P
CP
CP
MR
TC
TC
O
0
4-bit up/down decade counter
0
to P
U
D
U
D
to O
3
3
0
to O
parallel load input (active LOW)
parallel data inputs
count-up clock pulse input (LOW to HIGH,
edge-triggered)
count-down clock pulse input (LOW to
HIGH, edge-triggered)
master reset input (asynchronous)
buffered terminal count-up (carry) output
(active LOW)
buffered terminal count-down
(borrow) output (active LOW)
buffered counter outputs
Fig.1 Functional diagram.
3
), an active LOW terminal count-up
U
) and an active LOW terminal
D
), an asynchronous parallel
D
).
0
to P
3
), an
U
), a
2
counting, both clock inputs cannot be LOW
simultaneously. The outputs TC
HIGH. When the circuit has reached the maximum count
state of ‘9’, the next HIGH to LOW transition of CP
cause TC
HIGH again. Likewise, output TC
circuit is in the zero state and CP
LOW, the information on P
loaded into the counter. A HIGH on MR resets the counter
independent of all other input conditions. The counter
stages are of a static toggle type flip-flop.
FAMILY DATA, I
See Family Specifications
HEF40192BP(N): 16-lead DIL; plastic
HEF40192BD(F): 16-lead DIL; ceramic (cerdip)
HEF40192BT(D): 16-lead SO; plastic
( ): Package Designator North America
U
to go LOW. TC
DD
Fig.2 Pinning diagram.
LIMITS category MSI
(SOT38-1)
(SOT74)
(SOT109-1)
U
0
will stay LOW until CP
to P
U
D
3
D
and TC
is asynchronously
goes LOW. When PL is
Product specification
will go LOW when the
HEF40192B
D
are normally
MSI
U
U
will
goes