ETC PI74FCT191T

PI74FCT191T
Ω Series) PI74FCT2191T
(25Ω
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High Speed CMOS Presettable Synchronous
4-Bit Binary Counters
Product Features
Product Description
• PI74FCT191/2191T is pin compatible with bipolar FAST™
Series at a higher speed and lower power consumption
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 25 ohm series resistor on
all outputs to reduce noise due to reflections, thus eliminating the
need for an external terminating resistor.
• 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
The PI74FCT191T is a high speed CMOS 4-bit binary up/down
counter. It has a single clock with clock enable and up/down
control inputs and ripple carry output. The 191 has asynchronous
preload inputs which override the count inputs. All inputs have
clamp diodes for undershoot noise suppression. All outputs have
ground bounce suppression.
• Industrial operating temperature range: –40°C to +85°C
• Packages available:
– 16-pin 150 mil wide plastic QSOP (Q)
– 16-pin 300 mil wide plastic SOIC (S)
Logic Block Diagram
CE
D0-D3
PL
Cup
Q+Cup
- Cdn
Cdn
4-BIT
REGISTER
U/D
CP
Q3-Q0
=F
25Ω
Ω (FCT2XXX ONLY)
TC
=0
25Ω
Ω (FCT2XXX ONLY)
RC
25Ω
Ω (FCT2XXX ONLY)
1
PS2084B
01/13/97
PI74FCT191T
(25Ω
Ω SERIES) PI74FCT2191T
4-BIT BINARY COUNTERS
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Product Pin Description
Product Pin Configurations
(All Pins Top View)
Pin Name
I/O
De s cription
D3- D0
I
Data Inputs
Q3- Q0
O
Data Outputs
I
Preload
D1
1
16
VCC
PL
Q1
2
15
D0
U/D
I
Up/Down Select
Q0
3
14
CP
CE
I
Count Enable
CE
4
13
RC
CP
I
Count Clock
TC
O
Terminal Count
U/D
5
12
TC
RC
O
Ripple Clock
Q2
6
11
PL
Q3
7
10
D2
GND
8
9
D3
16-Pin
Q16
S16
Truth Table(1)
Inputs
PL
U/D
CP
L
X
X
H
L
↑
H
H
↑
H
X
X
H
L
Η
H
L
H
L
X
H
H
H
H
H
H
H
X
Notes:
1. H = High Voltage Level
L = Low Voltage Level
X = Don’t Care
Z = High Impedance
Outputs
CE
X
L
L
H
L
L
X
L
L
X
DI
D3- D0
X
X
X
X
X
X
X
X
X
Q3-Q0
D3- D0
Q +1
Q- 1
Q
F
F
0- E
0
0
1- F
2
TC
X
L
L
X
H
H
L
H
H
L
RC
X
H
H
X
H
H
H
H
Function
Load Data
Count Up
Count Down
Count Inhibit
Count Up = 1111
Count Up = 1111
Count Up ≠ 1111
Count Down = 0000
Count Down = 0000
Count Down ≠ 0000
PS2084B
01/13/97
PI74FCT191T
(25Ω
Ω SERIES) PI74FCT2191T
4-BIT BINARY COUNTERS
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Maximum Ratings
Maximum
(Above whichRatings
the useful life may be impaired. For user guidelines, not tested.)
(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 ................................................................................... 120 mA
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 conditions 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.
Power Dissipation ......................................................................................... 0.5W
DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5.0V ± 5%)
Parameters
Description
Test Conditions(1)
Min. Typ(2) Max. Units
VOH
Output HIGH Voltage VCC = Min., VIN = VIH or VIL
IOH = –15.0 mA
2.4
3.0
V
VOL
Output LOW Current
VCC = Min., VIN = VIH or VIL
IOL = 48 mA
0.3
0.50
V
VOL
Output LOW Current
VCC = Min., VIN = VIH or VIL
IOL = 12 mA (25Ω Series)
0.3
0.50
V
VIH
Input HIGH Voltage
Guaranteed Logic HIGH Level
VIL
Input LOW Voltage
Guaranteed Logic LOW Level
IIH
Input HIGH Current
VCC = Max.
IIL
Input LOW Current
VCC = Max.
VIK
Clamp Diode Voltage
VCC = Min., IIN = –18 mA
IOFF
Power Down Disable
VCC = GND, VOUT = 4.5V
IOS
Short Circuit Current
(3)
VH
Input Hysteresis
2.0
V
0.8
V
VIN = VCC
1
µA
VIN = GND
–1
µA
–0.7
–1.2
V
—
—
100
µA
–60
–120
mA
200
mV
VCC = Max. , VOUT = GND
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(4)
Description
Test Conditions
Typ
Max.
Units
CIN
Input Capacitance
VIN = 0V
6
10
pF
COUT
Output Capacitance
VOUT = 0V
8
12
pF
Notes:
1. For Max. or Min. conditions, use appropriate value 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
PS2084B
01/13/97
PI74FCT191T
(25Ω
Ω SERIES) PI74FCT2191T
4-BIT BINARY COUNTERS
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Power Supply Characteristics
Parameters
Description
Test Conditions(1) Min.
Typ(2)
Max.
Units
ICC
Quiescent Power
Supply Current
VCC = Max.
Freq = 0
VIN ≥ VHC;
VIN ≥ VLC
0.1
500
µA
∆ICC
Supply Current per
Input @ TTL HIGH
VCC = Max.
Freq = 0
VIN = 3.4V(3)
0.5
2.0
mA
ICCD
Supply Current per
Input per MHz(4)
VCC = Max.,
Outputs Open
and Enabled
One Bit Toggling
50% Duty Cycle, other
input at GND or VCC
VIN = VCC
VIN = GND
0.15
0.25
mA/
MHz
Ic
Total Power Supply
Current(6)
Vcc=Max., Outputs Open
Preset Mode
PL=CE=U/D=CP=GND
One Bit Toggling
at fi = 5MHz
50% Duty Cycle
VIN = Vcc
VIN = GND
—
0.8
2.3
mA
VIN = 3.4V
VIN = GND
—
1.0
3.3
VIN = Vcc
VIN = GND
—
3.0
6.0(5)
VIN = 3.4V
VIN = GND
—
4.0
10.0(5)
Vcc=Max., Outputs Open
Preset Mode
PL=CE=U/D=CP=GND
Four Bits Toggling
at fi = 5MHz
50% Duty Cycle
Notes:
1. For Max. or Min. conditions, 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 (VIN = 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. IC =IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fINI)
ICC = Quiescent Current
∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
fI = Input Frequency
NI = Number of Inputs at fI
All currents are in milliamps and all frequencies are in megahertz.
4
PS2084B
01/13/97
PI74FCT191T
(25Ω
Ω SERIES) PI74FCT2191T
4-BIT BINARY COUNTERS
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Switching Characteristics (Over Operating Range)
Symbol
D e s cription(1)
Conditions
M in.
191T
2191T
M a.x
191AT
2191AT
M in.
M ax.
M in.
191CT
M ax.
tCPQ
Propagation Delay
CP TO Q i
2.5
12
2.5
7.8
2.0
6.9
tCPTC
Propagation Delay
CP to TC
3.0
14
3.0
11.8
2.5
10.2
tCPRC
Propagation Delay
CP to RC
2.5
8.5
2.5
8.5
2.0
8.0
tCERC
Propagation Delay
CE to RC
2.0
8.0
2.0
7.2
1.5
6.8
4.0
15
2.0
9.8
2.0
9.0
CL = 50 pF
RL = 500Ω
tUDRC
Propagation Delay
U/D to RC
tUDTC
Propagation Delay
U/D to TC
3.0
11
3.0
7.2
2.0
6.8
tDQ
Propagation Delay
Di to Q i
2.0
14
2.0
9.1
2.0
8.5
tPLQ
Propagation Delay
PL to Q i
3.0
13
3.0
8.5
2.0
7.8
Unit
ns
Notes:
1. See Test Circuit and Waveforms.
2. Minimum limits are guaranteed but not tested on Propgation Delays.
3. This parameter guaranteed but not production tested.
5
PS2084B
01/13/97
PI74FCT191T
(25Ω
Ω SERIES) PI74FCT2191T
4-BIT BINARY COUNTERS
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Timing Characteristics (Over Operating Range)
Symbol
De s cription
tDPLS
Di to PL Setup
tDPLH
Di to PL Hold
tCS
CE to CP Setup
tCH
CE to CP HoId
tUDCPS
U/D to CP Setup
tUDCPH
U/D to CP Hold
tCPW
tPL
tPLCPR
Clock Pulse(1)
Width HIGH or LOW
PL LOW
PL to CP Recovery
Conditions
CL = 50 pF
RL = 500Ω
M in.
191T
2191T
M ax.
191AT
2191AT
M in.
M ax.
191CT
2191CT
M in.
M ax.
5.0
4.0
4.0
1.5
1.5
1.5
10
9.0
9.0
0
0
0
12
10
10
0
0
0
5.0
4.0
4.0
6.0
5.5
5.5
6.0
5.0
5.0
Unit
ns
Notes:
1.See Test Circuit and Waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. This parameter guaranteed but not production tested.
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
6
PS2084B
01/13/97