TC74AC166P/F
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74AC166P,TC74AC166F
8-Bit Shift Register (P-IN, S-OUT)
The TC74AC166 is an advanced high speed CMOS 8-BIT
PARALLEL/SERIAL-IN, SERIAL-OUT SHIFT REGISTER
fabricated with silicon gate and double-layer metal wiring
C2MOS technology.
It achieves the high speed operation similar to equivalent
Bipolar Schottky TTL while maintaining the CMOS low power
dissipation.
It consists of parallel-in or serial-in, serial-out 8-bit shift
register with a gated clock input and an overriding clear input.
The parallel-in or serial-in modes are controlled by the
SHIFT/ LOAD input. When the SHIFT/ LOAD input is held
high, the serial data input is enabled and the eight flip-flops
perform serial shifting on each clock pulse. When held low, the
parallel data inputs are enabled and synchronous loading occurs
on the next clock pulse. Clocking is accomplished on the
low-to-high transition of the clock pulse. The CLOCK-INHIBIT
input should be shifted high only while the CLOCK input is held
high. A direct clear input overrides all other inputs, including the
clock, and sets all the flip-flops to zero. Functional details are
shown in the truth table and the timing charts.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
TC74AC166P
TC74AC166F
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
: 1.00 g (typ.)
: 0.18 g (typ.)
Features
•
High speed: fmax = 170 MHz (typ.) at VCC = 5 V
•
Low power dissipation: ICC = 8 μA (max) at Ta = 25°C
•
High noise immunity: VNIH = VNIL = 28% VCC (min)
•
Symmetrical output impedance: |IOH| = IOL = 24 mA (min)
Capability of driving 50 Ω
•
transmission lines.
Balanced propagation delays: tpLH ∼
− tpHL
•
Wide operating voltage range: VCC (opr) = 2 to 5.5 V
•
Pin and function compatible with 74HC166
Pin Assignment
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TC74AC166P/F
IEC Logic Symbol
Truth Table
Internal
Output
Inputs
Output
CLR
SHIFT/
LOAD
CK INH.
CK
SERIAL
IN
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
H
H
L
H
X
H QAn
QGn
H
H
L
L
X
L QAn
QGn
H
X
H
X
X
X
No Change
a
b
h
No Change
X: Don’t care
a･･････h: The level of steady state input voltage at inputs A through H respectively
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TC74AC166P/F
Timing Chart
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TC74AC166P/F
System Diagram
Absolute Maximum Ratings (Note 1)
Characteristics
Symbol
Rating
Unit
Supply voltage range
VCC
−0.5 to 7.0
V
DC input voltage
VIN
−0.5 to VCC + 0.5
V
DC output voltage
VOUT
−0.5 to VCC + 0.5
V
Input diode current
IIK
±20
mA
Output diode current
IOK
±50
mA
DC output current
IOUT
±50
mA
DC VCC/ground current
ICC
±100
mA
Power dissipation
PD
500 (DIP) (Note 2)/180 (SOP)
mW
Storage temperature
Tstg
−65 to 150
°C
Note 1: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or
even destruction.
Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the
significant change in temperature, etc.) may cause this product to decrease in the reliability significantly
even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute
maximum ratings and the operating ranges.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/Derating Concept and Methods) and individual reliability data (i.e. reliability test
report and estimated failure rate, etc).
Note 2: 500 mW in the range of Ta = −40 to 65°C. From Ta = 65 to 85°C a derating factor of −10 mW/°C should be
applied up to 300 mW.
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TC74AC166P/F
Operating Ranges (Note)
Characteristics
Symbol
Rating
Unit
Supply voltage
VCC
2.0 to 5.5
V
Input voltage
VIN
0 to VCC
V
VOUT
0 to VCC
V
−40 to 85
°C
Output voltage
Operating temperature
Topr
Input rise and fall time
Note:
0 to 100 (VCC = 3.3 ± 0.3 V)
dt/dV
ns/V
0 to 20 (VCC = 5 ± 0.5 V)
The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
Electrical Characteristics
DC Characteristics
Test Condition
Characteristics
High-level input
voltage
Low-level input
voltage
High-level output
voltage
Symbol
VIH
VIL
VOH
VCC
(V)
Min
Typ.
Max
Min
Max
2.0
1.50
⎯
⎯
1.50
⎯
3.0
2.10
⎯
⎯
2.10
⎯
5.5
3.85
⎯
⎯
3.85
⎯
2.0
⎯
⎯
0.50
⎯
0.50
3.0
⎯
⎯
0.90
⎯
0.90
5.5
⎯
⎯
1.65
⎯
1.65
2.0
1.9
2.0
⎯
1.9
⎯
IOH = −50 μA
3.0
2.9
3.0
⎯
2.9
⎯
VIN
= VIH or
IOH = −4 mA
VIL
4.5
4.4
4.5
⎯
4.4
⎯
3.0
2.58
⎯
⎯
2.48
⎯
4.5
3.94
⎯
⎯
3.80
⎯
5.5
⎯
⎯
⎯
3.85
⎯
2.0
⎯
0.0
0.1
⎯
0.1
3.0
⎯
0.0
0.1
⎯
0.1
⎯
⎯
IOH = −24 mA
IOH = −75 mA
(Note)
IOL = 50 μA
Low-level output
voltage
VOL
Ta = −40 to
85°C
Ta = 25°C
VIN
= VIH or
IOL = 12 mA
VIL
4.5
⎯
0.0
0.1
⎯
0.1
3.0
⎯
⎯
0.36
⎯
0.44
IOL = 24 mA
4.5
⎯
⎯
0.36
⎯
0.44
5.5
⎯
⎯
⎯
⎯
1.65
IOL = 75 mA
(Note)
Unit
V
V
V
V
Input leakage
current
IIN
VIN = VCC or GND
5.5
⎯
⎯
±0.1
⎯
±1.0
μA
Quiescent supply
current
ICC
VIN = VCC or GND
5.5
⎯
⎯
8.0
⎯
80.0
μA
Note:
This spec indicates the capability of driving 50 Ω transmission lines.
One output should be tested at a time for a 10 ms maximum duration.
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TC74AC166P/F
Timing Requirements (input: tr = tf = 3 ns)
Characteristics
Symbol
Minimum pulse width
tW (H)
(CK)
tW (L)
Minimum pulse width
( CLR )
Minimum set-up time
(SI, PI)
Minimum set-up time
( S/L )
Minimum hold time
(SI, PI)
Minimum hold time
( S/L )
Minimum removal time
( CLR )
Ta =
25°C
Ta =
−40 to
85°C
VCC (V)
Limit
Limit
3.3 ± 0.3
7.0
7.0
5.0 ± 0.5
5.0
5.0
3.3 ± 0.3
8.0
8.0
5.0 ± 0.5
5.0
5.0
Test Condition
⎯
tW (L)
⎯
ts
⎯
ts
⎯
th
⎯
th
⎯
trem
⎯
3.3 ± 0.3
8.0
8.0
5.0 ± 0.5
4.0
4.0
3.3 ± 0.3
7.0
7.0
5.0 ± 0.5
4.0
4.0
3.3 ± 0.3
0.5
0.5
5.0 ± 0.5
0.5
0.5
3.3 ± 0.3
1.0
1.0
5.0 ± 0.5
1.0
1.0
3.3 ± 0.3
4.0
4.0
5.0 ± 0.5
1.5
1.5
Unit
ns
ns
ns
ns
ns
ns
ns
AC Characteristics (CL = 50 pF, RL = 500 Ω, input: tr = tf = 3 ns)
Characteristics
Symbol
Propagation delay
time
tpLH
(CK-QH)
tpHL
Propagation delay
time
Test Condition
⎯
Maximum clock
frequency
fmax
⎯
Input capacitance
CIN
Power dissipation
capacitance
CPD
Min
Typ.
Max
Min
Max
3.3 ± 0.3
⎯
9.4
16.1
1.0
18.3
5.0 ± 0.5
⎯
6.6
10.0
1.0
11.4
3.3 ± 0.3
⎯
9.2
15.2
1.0
17.4
5.0 ± 0.5
⎯
6.4
9.6
1.0
10.9
3.3 ± 0.3
55
105
⎯
55
⎯
5.0 ± 0.5
90
150
⎯
90
⎯
⎯
⎯
5
10
⎯
10
pF
⎯
⎯
67
⎯
⎯
⎯
pF
( CLR -QH)
Note:
(Note)
Unit
VCC (V)
⎯
tpHL
Ta = −40 to
85°C
Ta = 25°C
ns
ns
MHz
CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load.
Average operating current can be obtained by the equation:
ICC (opr) = CPD･VCC･fIN + ICC
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TC74AC166P/F
Package Dimensions
Weight: 1.00 g (typ.)
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TC74AC166P/F
Package Dimensions
Weight: 0.18 g (typ.)
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TC74AC166P/F
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all relevant TOSHIBA information, including without limitation, this document, the specifications, the data sheets and application notes
for Product and the precautions and conditions set forth in the "TOSHIBA Semiconductor Reliability Handbook" and (b) the
instructions for the application with which the Product will be used with or for. Customers are solely responsible for all aspects of their
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