1
PS7008C 06/26/01
Fast CMOS Clock Driver
Product Pin Configuration
Product Pin Description
Logic Block Diagram
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PI49FCT807T
PI49FCT2807T
Product Features
Guaranteed low skew: 0.25ns
Low input capacitance
Minimum duty cycle distortion
1:10 fanout
High speed: 3.5ns propagation delay
TTL input and CMOS output compatible
V
OH
= 3.3V (typ.)
V
OL
= 0.3V (typ.)
Packages available:
20-pin 300 mil wide SOIC (S)
20-pin 150 mil wide QSOP (Q)
20-pin 209 mil wde SSOP (H)
Industrial Operation at -40C to +85C
Product Description
Pericom Semiconductors PI49FCT series of logic circuits are
produced using the Companys advanced 0.8 micron CMOS
technology, achieving industry leading speed grades.
The PI49FCT807T and PI49FCT2807T clock drivers feature one
input and ten outputs. The large fanout from a single input line
reduces loading on input clock. TTL level outputs reduce noise
levels on the part. Typical applications are clock and signal
distribution.
The PI49FCT2807T also features a 25-ohm on-chip resistor for
lower noise.
V
CC
A
1
20
B
9
GND
2
19
B
8
B
0
3
18
GND
V
CC
4
17
B
7
B
1
5
16
V
CC
GND
6
15
B
6
B
2
7
14
GND
V
CC
8
13
B
5
B
3
9
12
B
4
GND
10
11
B
0
A
B
1
B
2
B
3
B
4
B
5
B
6
B
7
B
8
B
9
20-Pin
H, Q, R
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9
B
0
B
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D
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G
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C
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PI49FCT807/2807T
Fast CMOS Clock Driver
2
PS7008C 06/26/01
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DC Electrical Characteristics
(Over the Operating Range, T
A
= 40C to +85C, V
CC
= 5.0V 5%)
Parameters Description
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Units
V
OH
Output HIGH Voltage
V
CC
= Min., V
IN
= V
IH
or V
IL
I
OH
= 15.0mA
2.4
3.3
V
I
OH
= 48.0mA
0.2
0.5
V
V
OL
Output LOW Current
V
CC
= Min., V
IN
= V
IH
or V
IL
I
OL
= 12mA(25
)
0.2
0.5
V
V
IH
Input HIGH Voltage
Guaranteed Logic HIGH Level
2.0
V
V
IL
Input LOW Voltage
Guaranteed Logic LOW Level
0.8
V
I
IH
Input HIGH Current
V
CC
= Max.
V
IN
= 2.7V
1
A
I
IL
Input LOW Current
V
CC
= Max.
V
IN
= 0.5V
1
A
I
I
Input HIGH Current
V
CC
= Max., V
IN
=V
CC
(Max.)
20
A
V
IK
Clamp Diode Voltage
V
CC
= Min., I
IN
= 18mA
0.7
1.2
V
I
OS
Short Circuit Current
V
CC
= Max.
(3)
, V
OUT
= GND
60
120
225
mA
I
OFF
Power Down Disable
V
CC
= GND, V
OUT
= 4.5V
100
A
V
H
Input Hysteresis
150
mV
Capacitance
(T
A
= 25C, f = 1 MHz)
Parameters
(4)
Description
Test Conditions
Typ.
Max.
Units
C
IN
Input Capacitance
V
IN
= 0V
6.0
10
pF
C
OUT
Output Capacitance
V
OUT
= 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, +25C 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.
Storage Temperature ...........................................................65C to +150C
Ambient Temperature with Power Applied............................ -40C to +85C
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 de-
vice. This is a stress rating only and functional opera-
tion 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.
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
PI49FCT807/2807T
Fast CMOS Clock Driver
3
PS7008C 06/26/01
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Power Supply Characteristics
Parameters Description
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Units
I
CC
Quiescent Power
V
CC
= Max.
V
IN
= GND
3
30
A
Supply Current
or Vcc
I
CC
Supply Current per
V
CC
= Max.,
V
IN
= 3.4V
(3)
0.5
1.5
mA
Input @ TTL HIGH
I
CCD
Supply Current per
V
CC
= Max., Outputs Open
V
IN
= V
CC
0.4
0.6
mA/
Input per MHz
(4)
50% Duty Cycle,
V
IN
= GND
MHz
One Input Toggling
I
C
Total Power Supply
V
CC
= Max., Outputs Open
V
IN
= V
CC
20
30
(5)
mA
Current
(6)
f
CP
= 50 MH
Z
,
V
IN
= GND
50% Duty Cycle
V
IN
= 3.4V
20.7
33
(5)
V
IN
= GND
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, +25C 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.
Switching Characteristics over Operating Range
807/2807T
807AT
807BT
807CT
Com.
Com.
Com.
Com.
Parameters
Description
Conditions
(1)
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max. Units
t
P L H
Propagation Delay
C
L
= 50pF
1.5
4.5
1.5
4.0
1.5
3.8
1.5
3.5
ns
t
P H L
A
TO
B
N
R
L
= 500
t
SK(o)
Skew between two outputs
0.5
0.5
0.35
0.25
ns
of same package
(3)
t
SK(p)
Skew between opposite
0.5
0.5
0.35
0.35
ns
transitions of same
output (|t
PHL
t
PLH
|)
(3)
t
SK(t)
Skew between outputs of
1.0
1.0
0.75
0.75
ns
different package at same
power supply, temperature
and speed grade
(3)
Notes:
1. See test circuit and wave forms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. This parameter is guaranteed but not tested.
PI49FCT807/2807T
Fast CMOS Clock Driver
4
PS7008C 06/26/01
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Test
Switch
Open Drain
Disable LOW
Closed
Enable LOW
All Other Inputs
Open
Definitions:
C
L
= Load capacitance: includes jig and probe capacitance.
R
T
= Termination resistance: should be equal to ZOUT of the
Pulse Generator.
Switch Position
Tests Circuits For All Outputs
(1)
Switching Waveforms
Propagation Delay
Package Skew t
SK
(t)
Pulse Skew t
SK
(p)
Output Skew t
SK
(o)
Input
t
PLH
3V
1.5V
0V
Output
V
OH
1.5V
V
OL
t
PHL
2.0V
0.5V
t
R
t
F
Input
t
PLHx
3V
1.5V
0V
Ox
V
OH
1.5V
V
OL
t
PHLx
t
SK(o)
Oy
V
OH
1.5V
V
OL
t
SK(o)
t
PLHy
t
PHLy
t
SK(o)
=
t
PLHy
t
PLHx
or
t
PHLy
t
PHLx
Input
t
PLH
3V
1.5V
0V
Output
V
OH
1.5V
V
OL
t
PHL
t
SK(p)
=
t
PHL
t
PLH
Input
t
PLH1
3V
1.5V
0V
Package 1
Output
V
OH
1.5V
V
OL
t
PHL1
t
SK(t)
Package 2
Output
V
OH
1.5V
V
OL
t
SK(t)
t
PLH2
t
PHL2
t
SK(t)
=
t
PLH2
t
PLH1
or
t
PHL2
t
PHL1
Pulse
Generator
D.U.T.
V
IN
R
T
V
OUT
C
L
500
500
50pF
V
CC
7.0V
PI49FCT807/2807T
Fast CMOS Clock Driver
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PS7008C 06/26/01
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20-Pin 209-Mil SSOP (H)
.272
.295
.078
.002
SEATING
PLANE
.0098
Max.
.0256
BSC
.022
.037
.004
.009
.291
.322
1
20
.197
.220
0.25
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
0.050
7.40
8.20
0.55
0.95
0.09
0.25
5.00
5.60
2.00
6.90
7.50
0.65
Max
Min
20-Pin 150-Mil QSOP (Q)
.337
.344
.053
.069
.004
.010
SEATING
PLANE
.025
BSC
.007
.010
.228
.244
.150
.157
1
20
.016
.050
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
0.635
8.56
8.74
1.35
1.75
5.79
6.19
0.41
1.27
0.101
0.254
.008
.012
0.203
0.305
3.81
3.99
0.178
0.254
.058
1.47
.015 x 45
0.38
REF
Detail A
Detail A
.008
0.20
MIN.
Guage Plane
.010
0.254
.041
1.04
REF
.016
.035
0.41
0.89
0-6
.008
.013
0.20
0.33
PI49FCT807/2807T
Fast CMOS Clock Driver
6
PS7008C 06/26/01
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Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
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x
7
0
8
T
C
F
9
4
I
P
x
p
T
7
0
8
T
C
F
9
4
I
P
p
T
7
0
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2
T
C
F
9
4
I
P
p
T
7
0
8
2
T
C
F
9
4
I
P
Ordering Information
Note: x = Speed Grades: blank, A, B, C.
p = Package Type:
H = 209-mil SSOP
Q = 150-mil QSOP
S = 300-mil SOIC
Example:
PI49FCT807ATH = A grade,
H pkg marked as PI49FCT807THA
20-Pin 300-Mil SOIC (S)
SEATING
PLANE
.050
BSC
1
20
0-8
.2914
.2992
X.XX
X.XX
DENOTES CONTROLLING
DIMENSIONS IN MILLIMETERS
7.40
7.60
.496
.511
12.60
12.99
1.27
.0926
.1043
2.35
2.65
.394
.419
10.00
10.65
.0040
.0118
0.10
0.30
.013
.020
0.33
0.51
.010
.029
0.254
0.737
.0091
.0125
0.23
0.32
0.41
1.27
.016
.050
x 45
.020
.030
0.508
0.762
REF
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