TC74HC161,163AP/AF/AFN
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74HC161AP,TC74HC161AF,TC74HC161AFN
TC74HC163AP,TC74HC163AF,TC74HC163AFN
Synchronous Presettable 4-Bit Counter
TC74HC161AP/AF/AFN Binary, Asynchronous
Clear
TC74HC163AP/AF/AFN Binary, Synchronous
Clear
The TC74HC161A and 163A are high speed CMOS BINARY
PRESETTABLE COUNTERs fabricated with silicon gate C
2
MOS
technology.
They achieve the high speed operation similar to equivalent
LSTTL 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 their IC’s is synchronous to the rising edge of CK.
The clear function of the TC74HC163A is synchronous to CK,
while the TC74HC161A is cleared asynchronously.
Two enable inputs (ENP and ENT) and CO are provided to
enable easy cascading of counters, which facilitates easy
implementation of n-bit counters without using external gates.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
Note: xxxFN (JEDEC SOP) is not available in
Japan.
TC74HC161AP, TC74HC163AP
TC74HC161AF, TC74HC163AF
TC74HC161AFN, TC74HC163AFN
Features
•
•
•
•
•
•
High speed: f
max
= 63 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)
Output drive capability: 10 LSTTL loads
Symmetrical output impedance: |I
OH
| = I
OL
= 4 mA (min)
Balanced propagation delays: t
pLH
∼
t
pHL
−
Wide operating voltage range: V
CC
(opr) = 2 to 6 V
Pin and function compatible with 74LS161, 163
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
SOL16-P-150-1.27
: 1.00 g (typ.)
: 0.18 g (typ.)
: 0.13 g (typ.)
•
•
Pin Assignment
1
2007-10-01
TC74HC161,163AP/AF/AFN
Absolute Maximum Ratings (Note 1)
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
−
0.5 to V
CC
+
0.5
−
0.5 to V
CC
+
0.5
±
20
±
20
±
25
±
50
Unit
V
V
V
mA
mA
mA
mA
mW
°C
500 (DIP) (Note 2)/180 (SOP)
−
65 to 150
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 shall be
applied until 300 mW.
Operating Ranges (Note)
Characteristics
Supply voltage
Input voltage
Output voltage
Operating temperature
Symbol
V
CC
V
IN
V
OUT
T
opr
Rating
2 to 6
0 to V
CC
0 to V
CC
−
40 to 85
Unit
V
V
V
°C
0 to 1000 (V
CC
=
2.0 V)
Input rise and fall time
t
r
, t
f
0 to 500 (V
CC
=
4.5 V)
0 to 400 (V
CC
=
6.0 V)
ns
Note:
The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
5
2007-10-01
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