HEF4516BN PHILIPS [NXP Semiconductors], HEF4516BN Datasheet - Page 2

• Manufacturer Part Number: HEF4516BN
• Description: Binary up/down counter
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
DESCRIPTION
The HEF4516B is an edge-triggered synchronous
up/down 4-bit binary counter with a clock input (CP), an
up/down count control input (UP/DN), an active LOW
count enable input (CE), an asynchronous active HIGH
parallel load input (PL), four parallel inputs (P
parallel outputs (O
output (TC), and an overriding asynchronous master reset
input (MR).
PINNING
FAMILY DATA, I
See Family Specifications
January 1995
PL
P
CE
CP
UP/DN
MR
TC
O
0
Binary up/down counter
0
to P
to O
3
3
Fig.1 Functional diagram.
parallel load input (active HIGH)
parallel inputs
count enable input (active LOW)
clock pulse input (LOW to HIGH,
edge triggered)
up/down count control input
master reset input
terminal count output (active LOW)
parallel outputs
DD
0
LIMITS category MSI
to O
3
), an active LOW terminal count
0
to P
3
), four
2
Information on P
is HIGH, independent of all other input conditions except
MR which must be LOW. When PL and CE are LOW, the
counter changes on the LOW to HIGH transition of CP.
Input UP/DN determines the direction of the count, HIGH
for counting up, LOW for counting down. When counting
up, TC is LOW when O
When counting down, TC is LOW when O
CE are LOW. A HIGH on MR resets the counter (O
O
HEF4516BP(N):
HEF4516BD(F):
HEF4516BT(D):
( ): Package Designator North America
3
= LOW) independent of all other input conditions.
0
Fig.2 Pinning diagram.
to P
16-lead DIL; plastic (SOT38-1)
16-lead DIL; ceramic (cerdip) (SOT74)
16-lead SO; plastic (SOT109-1)
3
0
is loaded into the counter while PL
and O
3
are HIGH and CE is LOW.
Product specification
HEF4516B
0
to O
3
MSI
and
0
to