1PS8704C 11/13/08
1:5/1:7 3.3V CMOS Clock Drivers
Description
Pericom Semiconductor’s PI49FCT3280x is a 3.3V very low-skew
clock buffer from a single low-capacitance input that produces fi ve
outputs on PI49FCT32802 and seven outputs on PI49FCT32803.
Excellent output signals to power and ground ratio minimize power
and ground noise, and also improves output performance.
The PI49FCT3280x integrates series damping resistors on all
outputs.
Pin Confi guration (PI49FCT32802)
Block Diagram (PI49FCT32802)
PI49FCT32802
PI49FCT32803
Features
• Low skew: < 200ps
• Fast switching frequency >133 MHz
• Fast output rise/fall time < 1.5ns
• Low propagation delay < 2.5ns
• Low input capacitance < 6.0pF
• 5V Tolerant input
• Rail-to-Rail CMOS outputs
• Industrial Temperature: –40°C to +85°C
• 3.3V ±10% operation
• Packages (Pb-free & Green available):
– 16-pin 150-mil wide QSOP (Q)
– 16-pin 173-mil wide TSSOP (L)
A
B
0
B
1
B
2
B
3
B
4
Pin Confi guration (PI49FCT32803)
Block Diagram (PI49FCT32803)
A
B
0
B
1
B
2
B
3
B
6
VC
C
A1 16
B4
G
ND 2 15
B3B0 3 14
GN
D
VCC 413
B2B1 5 12
VC
C
G
ND 6 11
NCNC 7 10
GN
DV
CC 89
16-Pin
L, Q
VC
C
A1 16
B6
G
ND 2 15
B5B0 3 14
GN
D
VCC 413
B4B1 5 12
VC
C
G
ND 6 11
B3B2 7 10
GN
DV
CC 89
16-Pin
L, Q
Pin Description
Pin Name Description
PI49FCT32802 PI49FCT32803
A A Input
B0–B4 B0–B6 Outputs
GND GND Ground
VCC VCC Power
08-0298
2PS8704C 11/13/08
PI49FCT32802
PI49FCT32803
1:5/1:7 3.3V CMOS Clock Drivers
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the
device. This is a stress rating only and functional op er a tion
of the device at these or any other con di tions above those
indicated in the operational sec tions of this spec i fi ca tion is
not implied. Ex po sure to ab so lute maximum rating condi-
tions for extended pe ri ods may affect re li abil i ty.
Storage Temperature ............................................................ –65°C to +150°C
Ambient Temperature with Power Applied ...........................–40°C to +85°C
Supply Voltage to Ground Potential ........................................–0.5V to +5.5V
DC Input Voltage ....................................................................–0.5V to +5.5V
DC Output Current ............................................................................... 120mA
Power Dissipation ................................................................................... 0.5W
Notes:
1. For Max. or Min. conditions, use appropriate value specifi ed under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 3.3V, +25°C ambient and maximum loading.
3. VOH = VCC – 0.6V at rated current.
4. This parameter is determined by device characterization but is not production tested.
5. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
DC Electrical Characteristics (Over the Operating Range)
Symbol Description Test Conditions(1) Min. Typ. Max. Units
VOH Output HIGH voltage VCC=3V,VIN=VIH or VIL IOH = –8mA 2.4 3 –
V
VOL Output LOW voltage VCC=3V, VIN=VIH or VIL IOL = 12mA – 0.4 0.5
VIH Input HIGH voltage Guaranteed Logic HIGH Level (Input Pins) 2 – 5.5
VIL Input LOW voltage Guaranteed Logic LOW Level (Input Pins) –0.5 – 0.8
IIH Input HIGH current VCC = 3.6V VIN = 3.6V – – 1 μA
IIL Input LOW current VCC = 3.6V VIN = 0V – – –1
VIK Clamp diode voltage VCC = Min., IIN = –18mA – –0.7 –1.2 V
IOH Output HIGH current VCC = 3.3V, VIN = VIH or VIL, VOUT = 1.5V(5) –25 –45 –80
mAIOL Output LOW current VCC = 3.3V, VIN = VIH or VIL, VOUT = 1.5V(5) 25 45 90
IOS Short circuit current(5) VCC = Max., VOUT = GND(5) –50 –100 –180
VHInput Hysteresis – 150 – mV
RSSeries Resistor 22 Ω
08-0298
3PS8704C 11/13/08
PI49FCT32802
PI49FCT32803
1:5/1:7 3.3V CMOS Clock Drivers
Power Supply Characteristics
Parameters De scrip tion Test Conditions(1) Min. Typ(2) Max. Units
ICC Quiescent Power
Supply Current VCC = Max. VIN = GND
or VCC — 0.1 30
μA
ΔICC Supply Current per
Inputs @ TTL HIGH VCC = Max. VIN = VCC – 0.6V(3) — 47 300
ICCD Supply Current per
Input per MHz(4)
VCC = Max.,
Outputs Open
Per Output Toggling
50% Duty Cycle
VIN = VCC — mA/
VIN = GND 0.08 0.16 MHz
Notes:
1. For Max. or Min. conditions, use appropriate value specifi ed under Electrical Characteristics for the applicable device.
2. Typical values are at VCC = 3.3V, +25°C ambient.
3. Per TTL driven input (VIN = VCC – 0.6V); 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 IC formula. These limits are guaranteed but not tested.
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(1) De scrip tion Test Conditions Typ Max. Units
CIN Input Capacitance VIN = 0V 3.0 4 pF
COUT Output Capacitance VOUT = 0V 6
Notes:
1. This parameter is determined by device characterization but is not production tested.
Notes:
1. Other loading condition is described on page 4, “Test Circuits for All Outputs.”
2. These parameters are guaranteed by design.
3. Minimum propagation delay of 1.5ns is guaranteed by design.
Maximum Switching Characteristics (Over operating range)
Symbol Description Condition Max. Units
tPLH
tPHL Propagation Delay A to Bn(3) CL =15pF 2.5
ns
tR/tF Rise/Fall Time(2) 0.8V –2.0V 1.5
tSK(p) Pulse Skew (same pkg)(1,2)
CL =15pF
0.35
tSK(o) Output Skew (same pkg.)(1,2) 0.2
tSK(t) Output Skew (different pkg.)(1,2) 0.55
FIN Input Frequency(1,2) 133 MHz
08-0298
4PS8704C 11/13/08
PI49FCT32802
PI49FCT32803
1:5/1:7 3.3V CMOS Clock Drivers
Tests Circuits for All Outputs
Switching Waveforms
Propagation Delay
Package Skew – tSK(t)
Pulse Skew – tSK(p)
Output Skew – tSK(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
tPLH
3V
1.5V
0V
Output VOH
1.5V
VOL
tPHL
tSK(p) = ⎥ tPHL – tPLH ⎥
Pulse
Generator
f = 125MHz
D.U.T.
50ΩC
L
15pF
V
CC
08-0298
5PS8704C 11/13/08
PI49FCT32802
PI49FCT32803
1:5/1:7 3.3V CMOS Clock Drivers
.189
.197
.053
.069
.004
.010
SEATING
PLANE
.025
BSC
.007
.010
.228
.244
1
16
.150
.157
X.XX
X.XX DENOTES DIMENSIONS IN MILLIMETERS
0.635
4.80
5.00
1.35
1.75
5.79
6.19
0.101
0.254
.008
.012
0.203
0.305
3.81
3.99
0.178
0.254
0.38
.008
0.203
.015 x 45°
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
DESCRIPTION: 16-Pin 150-Mil Wide QSOP
PACKAGE CODE: Q
DOCUMENT CONTROL NO.
PD - 1201
REVISION: G
DATE: 11/07/07
Note:
1) Controlling dimensions in inches.
2) Ref: JEDEC MO-137B/AB.
3) Dimensions do not include mold flash, protrusions or gate burrs
Pericom Semiconductor Corporation
3545 N. 1st Street, San Jose, CA 95134
1-800-435-2335 • www.pericom.com
DESCRIPTION: 16-Pin, 173-Mil Wide, TSSOP
PACKAGE CODE: L
DOCUMENT CONTROL NO.
PD - 1310
REVISION: E
DATE: 03/09/05
Note:
1. Package Outline Exclusive of Mold Flash and Metal Burr
2. Controlling dimentions in millimeters
3. Ref: JEDEC MO-153F/AB
Pericom Semiconductor Corporation
3545 N. 1st Street, San Jose, CA 95134
1-800-435-2335 • www.pericom.com
.193
.201
.047
max.
.002
.006
SEATING
PLANE
.0256
BSC
.018
.030
.004
.008
.252
BSC
1
16
.169
.177
0.05
0.15
6.4
0.45
0.75
0.09
0.20
4.3
4.5
1.20
4.9
5.1
0.65 0.19
0.30
.007
.012
Packaging Mechanical: 16-pin TSSOP (L)
Packaging Mechanical: 16-pin QSOP (Q)
08-0298
6PS8704C 11/13/08
PI49FCT32802
PI49FCT32803
1:5/1:7 3.3V CMOS Clock Drivers
Ordering Information
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
Ordering Code Packaging Code Package Type
PI49FCT32802QE Q Pb-free and Green, 16-pin, 150-mil QSOP
PI49FCT32802LE L Pb-free and Green, 16-pin, 173-mil TSSOP
PI49FCT32803QE Q Pb-free and Green, 16-pin, 150-mil QSOP
PI49FCT32803LE L Pb-free and Green, 16-pin, 173-mil TSSOP
Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
08-0298