HEF4526BTD NXP Semiconductors, HEF4526BTD Datasheet - Page 3
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HEF4526BTD
Manufacturer Part Number
HEF4526BTD
Description
Counter ICs PROG 4B BCD DWN CNTR
Manufacturer
NXP Semiconductors
Datasheet
1.HEF4526BP652.pdf
(10 pages)
Specifications of HEF4526BTD
Counter Type
Binary Counters
Logic Family
HEF4526B
Number Of Bits
4
Counting Sequence
Down
Operating Supply Voltage
4.5 V to 15.5 V
Mounting Style
SMD/SMT
Package / Case
SOT-109
Other names
HEF4526BT,652
Philips Semiconductors
PINNING
COUNTING MODE
CF = HIGH; PL = LOW; MR = LOW
January 1995
PL
P
CF
CP
CP
MR
TC
O
0
Programmable 4-bit binary down counter
0
to P
0
1
COUNT
to O
15
14
13
12
10
11
9
8
7
6
5
4
3
2
1
0
3
3
parallel load input
parallel inputs
cascade feedback input
clock input (LOW to HIGH, triggered)
clock input (HIGH to LOW, triggered)
asynchronous master reset input
terminal count output
buffered parallel outputs
Fig.2 Pinning diagram.
O
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
3
O
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
2
OUTPUTS
O
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
1
O
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
0
3
FUNCTION TABLE
Notes
1. H = HIGH state (the more positive voltage)
HEF4526BP(N): 16-lead DIL; plastic
HEF4526BD(F):
HEF4526BT(D):
( ): Package Designator North America
MR
H
L
L
L
L
L
L
L
L = LOW state (the less positive voltage)
X = state is immaterial
= positive-going transition
= negative-going transition
PL
H
X
L
L
L
L
L
L
CP
X
X
X
H
L
16-lead DIL; ceramic (cerdip)
16-lead SO; plastic
(SOT38-1)
(SOT74)
(SOT109-1)
0
CP
H
X
X
X
L
1
reset (asynchronous)
preset (asynchronous)
no change
no change
no change
no change
counter advances
counter advances
Product specification
HEF4526B
MODE
MSI