4-bit synchronous binary counter
with synchronous reset
Product specification
File under Integrated Circuits, IC04
January 1995
Page 2
Philips SemiconductorsProduct specification
4-bit synchronous binary counter with
synchronous reset
DESCRIPTION
The HEF40163B is a fully synchronous edge-triggered
4-bit binary counter with a clock input (CP), four
synchronous parallel data inputs (P0to P3), four
synchronous mode control inputs (parallel enable (PE),
count enable parallel (CEP), count enable trickle (CET)
and synchronous reset (SR)), buffered outputs from all
four bit positions (O0to O3) and a terminal count output
(TC).
Operation is fully synchronous and occurs on the LOW to
HIGH transition of CP. When
HIGH transition of CP loads data into the counter from
P0to P3. When PE is HIGH, the next LOW to HIGH
PE is LOW, the next LOW to
HEF40163B
MSI
transition of CP advances the counter to its next state only
if both CEP and CET are HIGH; otherwise no change
occurs in the state of the counter. TC is HIGH when the
state of the counter is 15 (O
CET is HIGH. A LOW on SR sets all outputs (O0to O3and
TC) LOW on the next LOW to HIGH transition of CP,
independent of the state of all other synchronous mode
control inputs (CEP, CET and PE). Multistage
synchronous counting is possible without additional
components by using a carry look-ahead counting
technique; in this case, TC is used to enable successive
cascaded stages. CEP, CET, PE and SR must be stable
only during the set-up time before the LOW to HIGH
transition of CP.
to O3= HIGH) and when
0
Fig.1 Functional diagram.
FAMILY DATA, I
See Family Specifications
January 19952
LIMITS category MSI
DD
Page 3
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January 19953
Philips SemiconductorsProduct specification
4-bit synchronous binary counter with
synchronous reset
Fig.2 Logic diagram.
HEF40163B
MSI
Page 4
Philips SemiconductorsProduct specification
4-bit synchronous binary counter with
synchronous reset
CEPcount enable parallel input
CETcount enable trickle input
CPclock input (LOW to HIGH, edge-triggered)
SRsynchronous reset input (active LOW)
O
to O3parallel outputs
0
TCterminal count output
SYNCHRONOUS MODE SELECTION
SRPECEPCETMODE
HLXXpreset
HHLXno change
HHXLno change
HHHHcount
LXXXreset
Notes
1. H = HIGH state (the more positive voltage)
2. L = LOW state (the less positive voltage)
3. X = state is immaterial
TERMINAL COUNT GENERATION
CET(O0⋅ O1⋅ O2⋅ O3)TC
LLL
LHL
HLL
HHH
Note
1. TC = CET ⋅ O0⋅ O1⋅ O2⋅ O
3
January 19954
Fig.4 State diagram.
Page 5
Philips SemiconductorsProduct specification
4-bit synchronous binary counter with
HEF40163B
synchronous reset
AC CHARACTERISTICS
V
= 0 V; T
SS
Dynamic power51 200 f
dissipation per105 600 f
package (P)1516 000 f
AC CHARACTERISTICS
= 0 V; T
V
SS
Propagation delays
CP → O
HIGH to LOW10t
LOW to HIGH10t
CP → TC5130260ns103 ns + (0,55 ns/pF) C
HIGH to LOW10t
LOW to HIGH10t
CET → TC5105210ns78 ns + (0,55 ns/pF) C
HIGH to LOW10t
LOW to HIGH10t
Output transition times560120ns10 ns + (1,0 ns/pF) C
HIGH to LOW10t
LOW to HIGH10t
=25°C; input transition times ≤ 20 ns
amb
V
DD
V
=25°C; CL= 50 pF; input transition times ≤ 20 ns
amb
V
DD
V
n
5110220ns83 ns + (0,55 ns/pF) C
TYPICAL FORMULA FOR P (µW)
+∑(foCL) × V
i
+∑(foCL) × V
i
+∑(foCL) × V
i
SYMBOLMIN.TYP.MAX.
PHL
153060ns22 ns + (0,16 ns/pF) C
5115230ns88 ns + (0,55 ns/pF) C
PLH
153565ns27 ns + (0,16 ns/pF) C
PHL
153575ns27 ns + (0,16 ns/pF) C
5140280ns113 ns + (0,55 ns/pF) C
PLH
154080ns32 ns + (0,16 ns/pF) C
PHL
153575ns27 ns + (0,16 ns/pF) C
590185ns63 ns + (0,55 ns/pF) C
PLH
152550ns17 ns + (0,16 ns/pF) C
THL
152040ns6 ns + (0,28 ns/pF) C
560120ns10 ns + (1,0 ns/pF) C
TLH
152040ns6 ns + (0,28 ns/pF) C
DD
DD
DD
2
2
2
where
fi= input freq. (MHz)
fo= output freq. (MHz)
= load capacitance (pF)
C
L
∑ (f
) = sum of outputs
oCL
V
= supply voltage (V)
DD
TYPICAL EXTRAPOLATION
FORMULA
4590ns34 ns + (0,23 ns/pF) C
4595ns34 ns + (0,23 ns/pF) C
55105ns44 ns + (0,23 ns/pF) C
55115ns44 ns + (0,23 ns/pF) C
50100ns39 ns + (0,23 ns/pF) C
3570ns24 ns + (0,23 ns/pF) C
3060ns9 ns + (0,42 ns/pF) C
3060ns9 ns + (0,42 ns/pF) C
MSI
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
January 19955
Page 6
Philips SemiconductorsProduct specification
4-bit synchronous binary counter with
synchronous reset
AC CHARACTERISTICS
V
= 0 V; T
SS
Minimum clock510050ns
pulse width; LOW10t
Set-up times511055ns
P
→ CP10t
n
PE → CP10t
CEP, CET → CP10t
SR → CP10t
Hold times520−35ns
P
→ CP10t
n
PE → CP10t
CEP, CET → CP10t
SR → CP10t
Maximum clock52,55MHz
pulse frequency10f
=25°C; CL= 50 pF; input transition times ≤ 20 ns
amb
V
DD
V
SYMBOLMIN.TYP.MAX.
WCPL
153015ns
su
153015ns
512060ns
su
152510ns
5260130ns
su
157035ns
55025ns
su
151510ns
hold
155−10ns
515−45ns
hold
155−10ns
525−105ns
hold
1510−25ns
515−10ns
hold
1550ns
max
15918MHz
4020ns
4020ns
4020ns
10050ns
2010ns
10−10ns
5−15ns
15−35ns
5−5ns
714MHz
HEF40163B
MSI
see also waveforms
Figs 5, 6, 7 and 8
January 19956
Page 7
Philips SemiconductorsProduct specification
4-bit synchronous binary counter with
synchronous reset
Conditions
PE = LOW
P0 to P3= HIGH
Fig.5Waveforms showing
set-up and hold times
for SR input and
minimum CP pulse
width.
HEF40163B
MSI
Condition:
PE = SR = HIGH.
Fig.6 Waveforms showing set-up times and hold times for CEP and CET inputs.
January 19957
Page 8
Philips SemiconductorsProduct specification
4-bit synchronous binary counter with
synchronous reset
Conditions
PE = LOW
SR = HIGH
HEF40163B
MSI
Condition
SR = HIGH
Fig.7 Waveforms showing set-up times and hold times for Pninputs.
Fig.8 Waveforms showing set-up times and hold times for PE input.
Note
Set-up and hold times are shown as positive values but may be specified as negative values.
January 19958
Page 9
Philips SemiconductorsProduct specification
4-bit synchronous binary counter with
synchronous reset
HEF40163B
MSI
Fig.9 Timing diagram.
APPLICATION INFORMATION
An example of an application for the HEF40163B is:
• Programmable binary counter.
January 19959
Page 10
Philips SemiconductorsProduct specification
4-bit synchronous binary counter with
synchronous reset
HEF40163B
MSI
NOTE
On the TC outputs, glitches can
occur during counting. In totally
synchronous mode they will not
have any adverse affect. However
the TC output in asynchronous
mode can cause problems.
Fig.10 Synchronous multi-stage counting scheme.
January 199510
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