The SL74HC163 is identical in pinout to the LS/ALS163. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LS/ALSTTL outputs.
The SL74HC163 is programmable 4-bit synchronous counter that
feature parallel Load, synchronous Reset, a Carry Output for cascading
and count-enable controls.
The SL74HC163 is binary counter with synchronous Reset.
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA
• High Noise Immunity Characteristic of CMOS Devices
LOGIC DIAGRAM
ORDERING INFORMATION
SL74HC163N Plastic
SL74HC163D SOIC
TA = -55° to 125° C for all packages
PIN ASSIGNMENT
PIN 16 =VCC
PIN 8 = GND
FUNCTION TABLE
Inputs Outputs
Reset Load Enable P Enable T Clock Q0 Q1 Q2 Q3 Function
L X X X L L L L Reset to “0”
H L X X P0 P1 P2 P3 Preset Data
H H X L No change No count
H H L X No change No count
H H H H Count up Count
X X X X No change No count
X=don’t care
P0,P1,P2,P3 = logic level of Data inputs
Ripple Carry Out = Enable T • Q0 • Q1 • Q2 • Q3
SLS
System Logic
Page 2
SL74HC163
Semiconductor
MAXIMUM RATINGS*
Symbol Parameter Value Unit
VCC DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V
VIN DC Input Voltage (Referenced to GND) -1.5 to VCC +1.5 V
V
DC Output Voltage (Referenced to GND) -0.5 to VCC +0.5 V
OUT
IIN DC Input Current, per Pin ±20mA
I
DC Output Current, per Pin ±25mA
OUT
ICC DC Supply Current, VCC and G ND Pins ±50mA
PD Power Dissipation in Still Air, Plastic DIP+
SOIC Package+
750
500
Tstg Storage Temperature -65 to +150 °C
TL Lead Temperature, 1 mm from Case for 10 Seconds
260 °C
(Plastic DIP or SOIC Package)
*
Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
+Derating - Plastic DIP: - 10 mW/°C from 65° to 125°C
SOIC Package: : - 7 mW/°C from 65° to 125°C
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Max Unit
VCC DC Supply Voltage (Referenced to GND) 2.0 6.0 V
VIN, V
DC Input Voltage, Output Voltage (Referenced to GND) 0 VCC V
OUT
TA Operating Temperature, All Package Types -55 +125 °C
tr, tf Input Rise and Fall Time (Figure 1) VCC =2.0 V
VCC =4.5 V
V
=6.0 V
CC
0
0
0
1000
500
400
mW
ns
This device contains protection circuitry to guard against damage due to high static voltages or electric
fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated
voltages to this high-impedance circuit. For proper operation, VIN and V
GND≤(VIN or V
OUT
)≤VCC.
should be constrained to the range
OUT
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC).
Unused outputs must be left open.
System Logic
SLS
Page 3
SL74HC163
Semiconductor
DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND)
VCC Guaranteed Limit
Symbol Parameter Test Conditions V 25 °C
to
-55°C
VIH Minimum High-Level
Input Voltage
VIL Maximum Low -Level
Input Voltage
VOH Minimum High-Level
Output Voltage
VIN=VIH or VIL
VOL Maximum Low -Level
Output Voltage
VIN=VIH or VIL
IIN Maximum Input
V
=0.1 V or VCC-0.1 V
OUT
I
≤ 20 µA
OUT
V
=0.1 V or VCC-0.1 V
OUT
I
≤ 20 µA
OUT
VIN=VIH or VIL
I
≤ 20 µA
OUT
I
≤ 6.0 mA
OUT
I
≤ 7.8 mA
OUT
VIN=VIH or VIL
I
≤ 20 µA
OUT
I
≤ 6.0 mA
OUT
I
≤ 7.8 mA
OUT
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
1.5
3.15
4.2
0.5
1.35
1.8
1.9
4.4
5.9
3.98
5.48
0.1
0.1
0.1
0.26
0.26
VIN=VCC or GND 6.0 ±0.1±1.0±1.0µA
Leakage Current
≤85
°C
1.5
3.15
4.2
0.5
1.35
1.8
1.9
4.4
5.9
3.84
5.34
0.1
0.1
0.1
0.33
0.33
≤125
°C
1.5
3.15
4.2
0.5
1.35
1.8
1.9
4.4
5.9
3.7
5.2
0.1
0.1
0.1
0.4
0.4
Unit
V
V
V
V
ICC Maximum Quiescent
Supply Current
(per Package)
VIN=VCC or GND
I
=0µA
OUT
6.0 4.0 40 160 µA
System Logic
SLS
Page 4
SL74HC163
Semiconductor
AC ELECTRICAL CHARACTERISTICS(C
=50pF,Input tr=tf=6.0 ns)
L
VCC Guaranteed Limit
Symbol Parameter V 25 °C to
≤85°C ≤125°C Unit
-55°C
f
Maximum Clock Frequency (Figures1,6) 2.0
max
t
PLH
Maximum Propagation Delay Clock to Q
t
(Figures 1,6) 2.0
PHL
t
PLH
Maximum Propagation Delay Enable T to Ripple
4.5
6.0
2.0
4.5
6.0
4.5
6.0
2.0
4.5
6.0
6
30
35
120
20
16
145
22
18
110
16
14
5
24
28
160
23
20
185
25
20
150
18
15
Carry Out
t
(Figures 2,6) 2.0
PHL
t
PLH
Maximum Propagation Delay Clock to Ripple
4.5
6.0
2.0
4.5
6.0
135
18
15
120
22
18
175
20
16
160
27
22
4
20
24
200
28
22
320
30
23
190
20
17
210
22
20
200
30
25
MHz
ns
ns
ns
ns
ns
t
Carry Out (Figures 1,6) 2.0
PHL
t
, t
TLH
Maximum Output Transition Time, Any Output,
THL
(Figures 1 and 6)
4.5
6.0
2.0
4.5
6.0
145
22
20
75
15
13
185
28
24
95
19
16
220
35
28
110
22
19
CIN Maximum Input Capacitance - 10 10 10 pF
Power Dissipation Capacitance (Per Gate) Typical @25°C,VCC=5.0 V
CPD Used to deter mine the no-load dynamic power
consumption:
PD=CPDV
2
f+ICCVCC
CC
30 pF
ns
ns
SLS
System Logic
Page 5
SL74HC163
Semiconductor
TIMING REQUIREMENTS (C
VCC Guaranteed Limit
Symbol Parameter V 25 °C to
tsu Minimum Setup Time, Preset Data Inputs to Clock
(Figure 4)
tsu Minimum Setup Time, Load to Clock
(Figure 4)
tsu Minimum Setup Time, Reset to Clock
(Figure 3)
tsu Minimum Setup Time, Enable T or Enable P to
Clock (Figure 5)
th Minimum Hold Time, Clock to Load or Preset Data
Figure 5. Switching Waveforms Figure 6. Test Circuit
System Logic
Page 7
SL74HC163
Semiconductor
VCC=Pin 16
GND=Pin 8
The flip -flops shown in the circuit diagrams are Toggle-Enable flip -flops. A Toggle-Enable flip -flop is a
combination of a D flip-flop and a T flip-flop. When loading data from Preset inputs P0, P1, P2, and P3, the Load
signal is used to disable the Toggle input (Tn) of the flip -flop. The logic level at the Pn input is then clocked to
the Q output of the flip-flop on the next rising edge of the clock.
A logic zero on the Reset device input forces the internal clock (C) high and resets the Q output of the flipflop low.
Figure 7.Expanded logic diagram
System Logic
SLS
Page 8
SL74HC163
Semiconductor
SLS
Sequence illustrated in waveforms:
1. Reset outputs to zero.
2. Preset to binary twelve.
3. Count to thirteen, fourteen, fifteen, zero, one, and two.
4. Inhibit.
Figure 8. Timing Diagram
System Logic
Page 9
SL74HC163
Semiconductor
TYPICAL APPLICATIONS CASCADING
Note:When used in these cascaded configurations the clock f
not apply. Actual performance will depend on number of stages. This limitation is
due to set up times between Enable (Port) and clock.
Figure 9. N-Bit Synchronous Counters
guaranteed limits may
max
Figure 10. Nibble Ripple Counter
SLS
System Logic
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