INTEGRAL IN74HC166

TECHNICAL DATA
IN74HC166
8-Bit Serial or Parallel-Input/
Serial-Output Shift Register
High-Performance Silicon-Gate CMOS
The IN74HC166 is identical in pinout to the LS/ALS166. The
device inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LS/ALSTTL outputs.
This device is a parallel-in or serial-in, serial-out shift register with
gated clock inputs and an overriding clear input. The shift/load input
establishes the parallel-in or serial-in mode. When high, this input
enables the serial data input and couples the eight flip-flops for serial
shifting with each clock pulse. Synchronous loading occurs on the next
clock pulse when this is low and the parallel data inputs are enabled.
Serial data flow is inhibited during parallel loading. Clocking is done
on the low-to-high level edge of the clock pulse via a two input
positive NOR gate, which permits one input to be used as a clock
enable or clock inhibit function. Clocking is inhibited when either of
the clock inputs are held high, holding either input low enables the
other clock input. This will allow the system clock to be free running
and the register stopped on command with the other clock input. A
change from low-to-high on the clock inhibit input should only be
done when the clock input is high. A buffered direct clear input
overrides all other inputs, including the clock, andsets all flip-flop to
zero.
• 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
ORDERING INFORMATION
IN74HC166N Plastic
IN74HC166D SOIC
TA = -55° to 125° C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
PIN 16 =VCC
PIN 8 = GND
235
IN74HC166
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
-0.5 to +7.0
V
VCC
DC Supply Voltage (Referenced to GND)
VIN
DC Input Voltage (Referenced to GND)
-1.5 to VCC +1.5
V
DC Output Voltage (Referenced to GND)
-0.5 to VCC +0.5
V
DC Input Current, per Pin
±20
mA
IOUT
DC Output Current, per Pin
±25
mA
ICC
DC Supply Current, VCC and GND Pins
±50
mA
PD
Power Dissipation in Still Air, Plastic DIP+
SOIC Package+
750
500
mW
-65 to +150
°C
260
°C
VOUT
IIN
Tstg
TL
Storage Temperature
Lead Temperature, 1 mm from Case for 10 Seconds
(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
VCC
VIN, VOUT
Parameter
DC Supply Voltage (Referenced to GND)
DC Input Voltage, Output Voltage (Referenced to GND)
TA
Operating Temperature, All Package Types
tr, tf
Input Rise and Fall Time (Figure 1)
VCC =2.0 V
VCC =4.5 V
VCC =6.0 V
Min
Max
Unit
2.0
6.0
V
0
VCC
V
-55
+125
°C
0
0
0
1000
500
400
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 VOUT should be constrained to the range
GND≤(VIN or VOUT)≤VCC.
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC).
Unused outputs must be left open.
236
IN74HC166
DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND)
Guaranteed Limit
VCC
V
25 °C
to
-55°C
≤85
°C
≤125
°C
Unit
VOUT=0.1 V or VCC-0.1 V
IOUT≤ 20 µA
2.0
4.5
6.0
1.5
3.15
4.2
1.5
3.15
4.2
1.5
3.15
4.2
V
Maximum Low Level Input Voltage
VOUT=0.1 V or VCC-0.1 V
IOUT ≤ 20 µA
2.0
4.5
6.0
0.3
0.9
1.2
0.3
0.9
1.2
0.3
0.9
1.2
V
Minimum High-Level
Output Voltage
VIN=VIH or VIL
IOUT ≤ 20 µA
2.0
4.5
6.0
1.9
4.4
5.9
1.9
4.4
5.9
1.9
4.4
5.9
V
4.5
6.0
3.98
5.48
3.84
5.34
3.7
5.2
2.0
4.5
6.0
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
VIN=VIH or VIL
IOUT ≤ 4.0 mA
IOUT ≤ 5.2 mA
4.5
6.0
0.26
0.26
0.33
0.33
0.4
0.4
Symbol
Parameter
Test Conditions
VIH
Minimum High-Level
Input Voltage
VIL
VOH
VIN=VIH or VIL
IOUT ≤ 4.0 mA
IOUT ≤ 5.2 mA
VOL
Maximum Low-Level
Output Voltage
VIN=VIH or VIL
IOUT ≤ 20 µA
V
IIN
Maximum Input
Leakage Current
VIN=VCC or GND
6.0
±0.1
±1.0
±1.0
µA
ICC
Maximum Quiescent
Supply Current
(per Package)
VIN=VCC or GND
IOUT=0µA
6.0
8.0
80
160
µA
FUNCTION TABLE
Inputs
Internal
Outputs
Output
Clear
Shift/Load
Clock
Inhibit
Clock
SA
Parallel
A...H
QA
QB
QH
L
X
X
X
X
X
L
L
L
H
X
X
X
X
H
L
L
X
a...h
a
b
h
H
H
L
H
X
H
QAn
QGn
H
H
L
L
X
L
QAn
QGn
H
X
H
X
X
X
No change
No change
X = don’t care
a...h = the level of steady state input voltage at input A trough H respectively
237
IN74HC166
AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input tr=tf=6.0 ns)
Guaranteed Limit
VCC
Symbol
Parameter
V
25 °C
to
-55°C
≤85°C
≤125°C
Unit
fmax
Minimum Clock Frequency (50% Duty Cycle)
(Figures 2 and 4)
2.0
4.5
6.0
6.0
31
36
5.0
25
28
4.2
21
25
MHz
tPLH, tPHL
Maximum Propagation Delay, Clock (or Clock
Inhibit) to QH (Figures 2,3 and 4)
2.0
4.5
6.0
140
28
24
175
35
30
210
42
36
ns
Maximum Propagation Delay , Clear to QH
(Figures 1 and 4)
2.0
4.5
6.0
150
30
26
200
40
34
230
48
40
ns
Maximum Output Transition Time, Any Output
(Figures 1 and 4)
2.0
4.5
6.0
75
16
14
95
20
18
110
25
20
ns
-
10
10
10
pF
tPHL
tTLH, tTHL
CIN
CPD
Maximum Input Capacitance
Power Dissipation Capacitance (Per Package)
Typical @25°C,VCC=5.0 V
Used to determine the no-load dynamic power
consumption:
PD=CPDVCC2f+ICCVCC
140
pF
TIMING REQUIREMENTS(CL=50pF,Input tr=tf=6.0 ns)
Guaranteed Limit
VCC
Symbol
238
Parameter
V
25 °C to
-55°C
≤85°C
≤125°C
Unit
tsu
Minimum Setup Time, Shift/Load to
Clock (Figure 3)
2.0
4.5
6.0
80
16
14
100
20
18
120
24
20
ns
tsu
Minimum Setup Time, Data before
Clock (or Clock Inhibit) (Figure 3)
2.0
4.5
6.0
80
16
14
100
20
18
120
24
20
ns
tw
Minimum Pulse Width, Clock (or
Clock Inhibit) (Figure 2)
2.0
4.5
6.0
80
16
14
100
20
17
120
24
20
ns
IN74HC166
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
Figure 3. Switching Waveforms
Figure 4. Test Circuit
239
IN74HC166
TIMING DIAGRAM
EXPANDED LOGIC DIAGRAM
240