TC74VHC161,163F/FN/FT/FK
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74VHC161F, TC74VHC161FN, TC74VHC161FT,TC74VHC161FK
TC74VHC163F, TC74VHC163FN, TC74VHC163FT,TC74VHC163FK
Synchronous Presettable 4-Bit Counter
TC74VHC161F/FN/FT/FK Binary,
Asynchronous Clear
TC74VHC163F/FN/FT/FK Binary,
Synchronous Clear
The TC74VHC 161 and 163 are advanced high speed CMOS
SYNCHRONOUS PRESETTABLE 4 BIT BINARY COUNTERs
fabricated with silicon gate C
2
MOS technology.
They achieve the high speed operation similar to equivalent
Bipolar Schottky TTL while maintaining the CMOS low power
dissipation.
The CK input is active on the rising edge. Both
LOAD
and
CLR
inputs are active on low logic level.
Presetting of each IC’s is synchronous to the rising edge of CK.
The clear function of the TC74VHC163 is synchronous to CK,
while the TC74VHC161 are cleared asynchronously.
Two enable inputs (ENP and ENT) and CARRY OUTPUT are
provided to enable easy cascading of counters, which facilitates
easy implementation of n-bit counters without using external
gates.
An input protection circuit ensures that 0 to 5.5 V can be
applied to the input pins without regard to the supply voltage.
This device can be used to interface 5 V to 3 V systems and two
supply systems such as battery back up. This circuit prevents
device destruction due to mismatched supply and input voltages.
Note: xxxFN (JEDEC SOP) is not available in
Japan.
TC74VHC161F, TC74VHC163F
TC74VHC161FN, TC74VHC163FN
TC74VHC161FT, TC74VHC163FT
Features
•
•
•
•
•
•
•
•
High speed: f
max
=
185 MHz (typ.) at V
CC
=
5 V
Low power dissipation: I
CC
=
4
μA
(max) at Ta
=
25°C
High noise immunity: V
NIH
=
V
NIL
= 28% V
CC
(min)
Power down protection is provided on all inputs.
Balanced propagation delays: t
pLH
∼
t
pHL
−
Wide operating voltage range: V
CC
(opr)
=
2 to 5.5 V
Low noise: V
OLP
=
0.8 V (max)
Pin and function compatible with 74ALS161/163
TC74VHC161FK, TC74VHC163FK
Weight
SOP16-P-300-1.27A
SOL16-P-150-1.27
TSSOP16-P-0044-0.65A
VSSOP16-P-0030-0.50
: 0.18 g (typ.)
: 0.13 g (typ.)
: 0.06 g (typ.)
: 0.02 g (typ.)
1
2007-10-01
TC74VHC161,163F/FN/FT/FK
Absolute Maximum Ratings (Note)
Characteristics
Supply voltage range
DC input voltage
DC output voltage
Input diode current
Output diode current
DC output current
DC V
CC
/ground current
Power dissipation
Storage temperature
Symbol
V
CC
V
IN
V
OUT
I
IK
I
OK
I
OUT
I
CC
P
D
T
stg
Rating
−0.5
to 7.0
−0.5
to 7.0
−0.5
to V
CC
+ 0.5
−20
±20
±25
±50
180
−65
to 150
Unit
V
V
V
mA
mA
mA
mA
mW
°C
Note:
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).
Operating Range
(Note)
Characteristics
Supply voltage
Input voltage
Output voltage
Operating temperature
Input rise and fall time
Symbol
V
CC
V
IN
V
OUT
T
opr
dt/dv
Rating
2.0 to 5.5
0 to 5.5
0 to V
CC
−40
to 85
0 to 100 (V
CC
= 3.3 ± 0.3 V)
0 to 20 (V
CC
= 5 ± 0.5 V)
Unit
V
V
V
°C
ns/V
Note:
The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either V
CC
or GND.
5
2007-10-01
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