DATA SHEET
Product specification
File under Integrated Circuits, IC04
January 1995
INTEGRATED CIRCUITS
HEF4040B
MSI
12-stage binary counter
For a complete data sheet, please also download:
The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC
The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC
January 1995
2
Philips Semiconductors
Product specification
12-stage binary counter
HEF4040B
MSI
DESCRIPTION
The HEF4040B is a 12-stage binary ripple counter with a
clock input (CP), an overriding asynchronous master reset
input (MR) and twelve fully buffered outputs (O
0
to O
11
).
The counter advances on the HIGH to LOW transition of
CP. A HIGH on MR clears all counter stages and forces all
outputs LOW, independent of CP. Each counter stage is a
static toggle flip-flop. Schmitt-trigger action in the clock
input makes the circuit highly tolerant to slower clock rise
and fall times.
Fig.1 Functional diagram.
HEF4040BP(N):
16-lead DIL; plastic
(SOT38-1)
HEF4040BD(F):
16-lead DIL; ceramic (cerdip)
(SOT74)
HEF4040BT(D):
16-lead SO; plastic
(SOT109-1)
( ): Package Designator North America
Fig.2 Pinning diagram.
PINNING
APPLICATION INFORMATION
Some examples of applications for the HEF4040B are:
Frequency dividing circuits
Time delay circuits
Control counters
FAMILY DATA, I
DD
LIMITS category MSI
See Family Specifications
CP
clock input (HIGH to LOW edge-triggered)
MR
master reset input (active HIGH)
O
0
to O
11
parallel outputs
January 1995
4
Philips Semiconductors
Product specification
12-stage binary counter
HEF4040B
MSI
Note
1. For other loads than 50 pF at the n
th
output, use the slope given.
Minimum clock
5
50
25
ns
see also waveforms
Fig.4
pulse width; HIGH
10
t
WCPH
30
15
ns
15
20
10
ns
Minimum MR
5
40
20
ns
pulse width; HIGH
10
t
WMRH
30
15
ns
15
20
10
ns
Recovery time
5
40
20
ns
for MR
10
t
RMR
30
15
ns
15
20
10
ns
Maximum clock
5
10
20
MHz
pulse frequency
10
f
max
15
30
MHz
15
25
50
MHz
V
DD
V
TYPICAL FORMULA FOR P (
W)
Dynamic power
5
400 f
i
+
(f
o
C
L
)
V
DD
2
where
dissipation per
10
2 000 f
i
+
(f
o
C
L
)
V
DD
2
f
i
= input freq. (MHz)
package (P)
15
5 200 f
i
+
(f
o
C
L
)
V
DD
2
f
o
= output freq. (MHz)
C
L
= load cap. (pF)
(f
o
C
L
) = sum of outputs
V
DD
= supply voltage (V)
V
DD
V
SYMBOL
MIN. TYP. MAX.
TYPICAL EXTRAPOLATION
FORMULA
January 1995
5
Philips Semiconductors
Product specification
12-stage binary counter
HEF4040B
MSI
Fig.4
Waveforms showing propagation delays for MR to O
n
and CP to O
0
, minimum MR and CP pulse widths.