HEF4029BD Philips Semiconductors, HEF4029BD Datasheet - Page 2

• Manufacturer Part Number: HEF4029BD
• Description: Synchronous up/down counter/ binary/decade counter
• Manufacturer: Philips Semiconductors

Philips Semiconductors
DESCRIPTION
The HEF4029B is a synchronous edge-triggered up/down
4-bit binary/BCD decade counter with a clock input (CP),
an active LOW count enable input (CE), an up/down
control input (UP/DN), a binary/decade control input
(BIN/DEC), an overriding asynchronous active HIGH
parallel load input (PL), four parallel data inputs (P
four parallel buffered outputs (O
LOW terminal count output (TC).
January 1995
HEF4029BP(N):
HEF4029BD(F):
HEF4029BT(D):
( ): Package Designator North America
Synchronous up/down counter,
binary/decade counter
Fig.1 Functional diagram.
16-lead DIL; plastic
16-lead DIL; ceramic (cerdip)
16-lead SO; plastic
(SOT38-1)
(SOT74)
(SOT109-1)
0
to O
3
) and an active
0
to P
3
),
2
Information on P
counter while PL is HIGH, independent of CP.
The counter is advanced one count on the LOW to HIGH
transition of CP when CE and PL are LOW. The TC signal
is normally HIGH and goes LOW when the counter
reaches its maximum count in the UP mode, or the
minimum count in the DOWN mode provided CE is LOW.
PINNING
FAMILY DATA, I
See Family Specifications
PL
P
BIN/DEC
UP/DN
CE
CP
O
TC
0
0
to P
to O
3
3
parallel load input
parallel data inputs
binary/decade control input
up/down control input
count enable input (active LOW)
clock input (LOW to HIGH, edge triggered)
buffered parallel outputs
terminal count output (active LOW)
DD
0
Fig.2 Pinning diagram.
to P
LIMITS category MSI
3
is asynchronously loaded into the
Product specification
HEF4029B
MSI