MUX
CLR 4-Bit
Register
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT161T/163T
Ω
(25Ω Series) PI74FCT2161T/2163T
High Speed CMOS Synchronous
4-Bit Binary Counters
Product Features
•
PI74FCT161/163/2161/2163T are pin-compatible with
•
•
•
•
•
•
•
bipolar FAST
TM
Series at a higher speed and lower power
consumption
25Ω series resistor on all outputs (FCT2XXX only)
TTL input and output levels
Low ground bounce outputs (25Ω series only)
Extremely low static power
Hysteresis on all inputs
Industrial operating temperature range: -40°C to + 85°C
Packages available:
- 16-pin 150 mil wide plastic QSOP (Q)
- 16-pin 150 mil wide plastic SOIC (W)
- 16-pin 300 mil wide plastic SOIC (S)
Product Description
Pericom Semiconductor’s PI74FCT series of logic circuits are
produced in the Company’s advanced 0.6 micron CMOS technology,
achieving industry leading speed grades. All PI74FCT2XXX devices
have a built-in 25Ω series resistor on all outputs to reduce noise
owing to reflections, thus eliminating an external terminating
resistor.
The PI74FCT161T and PI74FCT163 are high speed CMOS
synchronous presettable 4-bit binary counters. The 161 has an
asynchronous clear, the 163 has a clocked synchronous clear. Data
is preloaded or the counters count on the rising edge of the clock.
Count enable inputs and terminal count outputs allow these counters
to be cascaded without loss of speed. Preset inputs override count
inputs, and clear inputs override both preset and count inputs. All
inputs have clamp diodes for undershoot noise suppression. All
outputs have ground bounce suppression.
Functional Block Diagram
CET
= FF
25 Ohm
(FCT2XXX Only)
Pin Configurations
TC
MR
CP
D0
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
TC
Q0
Q1
Q2
Q3
CET
PE
163 Only
CEP
D3-C0
PE
Cin Q+Cin
Q3-Q0
25 Ohm
(FCT2XXX Only)
D1
D2
D3
CEP
GND
MR
CP
161 Only
V
1
PS2083B
10/08/01
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT161T/163T
(25Ω SERIES) PI74FCT2161T/2163T
Ω
4-BIT BINARY COUNTERS
Pin Description
Pin Name
D3- D0
Q 3- Q 0
CP
MR
CEP
CET
TC
PE
I/O
I
O
I
I
I
I
O
I
De s cription
Data Inputs
Data Outputs
Clock
Master Reset
Counter Enable
Count and TC Enable
Terminal Count
Parallel Load Enable
Function Table
Inputs
Outputs
Q3-Q0
MR
L
L
H
H
H
H
H
H
H
Notes:
1. H
L
X
Z
↑
Function
TC
L
L
L
X
X
X
X
H
L
L
Clear 161
Clear 163
Load Data
Count
Count Inhibit P
Count Inhibit T
Count = 1111
Count
≠
1111
TC Inhibit
PE
X
X
L
H
H
H
H
H
H
CP
X
↑
↑
↑
↑
↑
X
X
X
CEP CET
X
X
X
H
L
X
X
X
X
X
X
X
H
X
L
H
H
L
DI
X
X
D3- D0
X
X
X
X
X
X
161
L
163
D3- D0
Q+1
Q
Q
F
0- E
X
D3- D0
Q+1
Q
Q
F
0- E
X
=
=
=
=
=
High Voltage Level
Low Voltge Level
Don’t Care
High Impedance
Low to High
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PS2083B
10/08/01
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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT161T/163T
(25Ω SERIES) PI74FCT2161T/2163T
Ω
4-BIT BINARY COUNTERS
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ................................................................. –65°C to +150°C
Ambient Temperature with Power Applied .................................. -40°C to +85°C
Supply Voltage to Ground Potential (Inputs & Vcc Only) .......... –0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) ....... –0.5V to +7.0V
DC Input Voltage ......................................................................... –0.5V to +7.0V
DC Output Current .................................................................................... 120mA
Power Dissipation ......................................................................................... 0.5W
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other condi-
tions above those indicated in the operational sections
of this specification is not implied. Exposure to
absolute maximum rating conditions for extended
periods may affect reliability.
DC Electrical Characteristics
(Over the Operating Range, T
A
= -40°C, Vcc = 5.0V ±5%)
Parame te rs
V
OH
V
OL
V
OL
V
IH
V
IL
I
IH
I
IL
I
OZH
I
OZL
V
IK
I
OFF
I
OS
V
H
De s cription
Output HIGH Voltage
Output LOW Current
Output LOW Current
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
High Impedance
Vcc = Max.
Output Current
Clamp Diode Voltage
Power Down Disable
Short Circuit Current
Input Hysteresis
Vcc = Min., I
IN
= - 18mA
Vcc = GND., V
OUT
= 4.5V
Vcc = Max.
( 3 )
, V
OUT
= GND
-
- 60
V
OUT
= 0.5V
- 0.7
-
- 12 0
200
-1
- 1.2
100
Vcc = Max.
Vcc = Max.
Te s t Conditions
( 1 )
V
CC
= M
IN
., V
IN
= V
IH
or V
IL
V
CC
= M
IN
., V
IN
= V
IH
or V
IL
V
CC
= M
IN
., V
IN
= V
IH
or V
IL
I
OH
= - 15.0mA
I
OL
= 48mA
I
OL
= 12mA (25 Ohm Series)
2.0
0.8
1
-1
1
M in.
2.4
Typ
( 2 )
3.0
0.3
0.3
0.50
0.50
M ax.
Units
V
V
V
V
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
IN
= V
CC
V
IN
= GND
V
OUT
= 2.7V
µA
mA
µA
µA
µA
µA
µA
mA
mV
Capacitance
(T
A
= 25
°
C, f = 1 MHz)
Parame te rs
(4)
C
IN
C
OUT
De s cription
Input Capacitance
Output Capacitance
Te s t Conditions
V
IN
= 0V
V
OUT
= 0V
Typ.
6
8
M ax.
10
12
Units
pF
pF
Notes:
1. For Max. or Min. conditions, use the appropriate values specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient and maximum loading.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. This parameter is determined by device characterization but is not production tested.
3
PS2083B
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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT161T/163T
(25Ω SERIES) PI74FCT2161T/2163T
Ω
4-BIT BINARY COUNTERS
Power Supply Characteristics
Parame te rs
I
CC
∆
CCD
De s cription
Quiescent Power
Supply Current
Supply Current per
Input @ TTL HIGH
Supply Current per
Input per MHz
(4)
Vcc =Max.
Vcc =Max
Vcc =Max., Outputs Open
OE = GND
T/R = GND or V
CC
One Bit Toggling, 50% Duty Cycle
Te s t Conditions
(1)
V
IN
≥
V
HC
;
V
IN
≥
V
LC
;
V
IN
= 3.4V
(3)
M in.
Typ
(2)
0.1
0.5
M a x.
500
2.5
Units
µA
mA
I
CCD
V
IN
= V
CC
;
V
IN
= GND
0.15
0.25
mA/
MHz
Vcc =Max., Outputs Open
f
I
= 10 MHz, 50% Duty Cyc
LE
T/R = OE = GND
One Bit Toggling
V
IN
= V
CC
;
V
IN
= GND
2.0
4.0
(5)
V
IN
= 3.4V
V
IN
= GND
2.3
5.0
(5)
mA
I
C
Total Power
Supply Current
(6)
Vcc =Max., Outputs Open
f
I
= 10 MHz, 50% Duty Cycle
T/R = OE = GND
Eight Bit Toggling
V
IN
= V
CC
;
V
IN
= GND
3.5
6.5
(5)
V
IN
= 3.4V
V
IN
= GND
5.5
14.5
(5)
Notes:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 5.0V, +25°C ambient.
3. Per TTL driven input (V
IN
= 3.4V); all other inputs at Vcc or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested.
6. I
C
=I
QUIESCENT
+ I
INPUTS
+ I
DYNAMIC
I
C
= I
CC
+
∆I
CC
D
H
N
T
+ I
CCD
(f
CP
/2 + f
I
N
I
)
I
CC
= Quiescent Current
∆I
CC
= Power Supply Current for a TTL High Input (V
IN
= 3.4V)
D
H
= Duty Cycle for TTL Inputs High
N
T
= Number of TTL Inputs at D
H
I
CCD
= Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
f
CP
= Clock Frequency for Register Devices (Zero for Non-Register Devices)
f
I
= Input Frequency
N
I
= Number of Inputs at f
I
All currents are in milliamps and all frequencies are in megahertz.
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PS2083B
10/08/01
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT161T/163T
(25Ω SERIES) PI74FCT2161T/2163T
Ω
4-BIT BINARY COUNTERS
Switching Characteristics (Over Operating Range)
161T, 163T,
2161T, 2163T
Symbol
t
CPQ
t
CPQ
t
MRQ
t
MRQ
t
CPTC
t
CETC
t
MRTC
De s cription
(1)
Propagation Delay
CP to Q
I
(161/3)
Propagation Delay
CP to Q
I
(2161/3)
Propagation Delay
MR to Q
I
(161)
Propagation Delay
MR to Q
I
(2161)
Propagation Delay
CP to TC
Propagation Delay
CET to TC
Propagation Delay
MR to TC
Conditions
C
L
= 50pF
R
L
= 500 Ohm
C
L
= 50pF
R
L
= 500 Ohm
C
L
= 50pF
R
L
= 500 Ohm
C
L
= 50pF
R
L
= 500 Ohm
C
L
= 50pF
R
L
= 500 Ohm
C
L
= 50pF
R
L
= 500 Ohm
C
L
= 50pF
R
L
= 500 Ohm
M in.
2.0
2.0
2.0
2.0
2.0
1.5
1.5
M ax.
9.5
9.5
13
14
15
8.5
11.5
161AT, 163AT,
2161AT, 2163AT
M in.
2.0
2.0
2.0
2.0
2.0
1.5
1.5
M ax.
6.2
6.2
8.5
9.1
9.8
5.5
7.5
2.0
1.5
1.5
8.8
5.0
6.8
2.0
7.8
161CT, 163CT
M in.
2.0
M ax.
5.6
Units
ns
ns
ns
ns
ns
ns
ns
Notes:
1. Minimums Test Circuit and Waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. PI74FCT2161 is available only by minimum special order.
5
PS2083B
10/08/01
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