PO49FCT3805B
3.3V Dual 1:5 CMOS Clock Buffered Driver
800MHz TTL/CMOS Potato Chip
08/01/06
FEATURES:
. Patented technology
. Operating frequency up to 800MHz with 2pf load
. Operating frequency up to 600MHz with 5pf load
. Operating frequency up to 300MHz with 15pf load
. Operating frequency up to 100MHz with 50pf load
. Very low output pin to pin skew < 80ps
. Very low pulse skew < 300ps
. VCC = 1.65V to 3.6V
. Propagation delay < 2.4ns max with 15pf load
. Low input capacitance: 3pf typical
. Dual 1:5 fanout
. Available in 20pin 300mil wide SOIC package
. Available in 20pin 150mil wide QSOP package
. Available in 20pin 209mil wide SSOP package
DESCRIPTION:
Potato Semiconductor’s PO49FCT3805B is
designed for world top performance using
submicron CMOS technology to achieve
800MHz TTL output frequency with less than
80ps output pin to pin skew.
PO49FCT3805B is a 1.65V to 3.6V CMOS
Dual 1 input to 5 outputs Buffered driver to
achieve 800MHz output frequency.
Typical applications are clock and signal distribution.
Inputs can be driven from either 3.3V or 5V devices.
This feature allows the use of these devices as
translators in a mixed 3.3V/5V system environment.
Pin Configuration
Logic Block Diagram
Pin Description
Pin Name
INA, INB
Description
Signal or clock Inputs
Hi-Z State Output Enable Inputs (Active LOW)
OAn, OBn
MON
Vcc, GND
Signal or clock Outputs
Monitor Output
Power, Ground
L
L
H
H
Inputs
INA, INB
L
H
L
H
Outputs
OAn, OBn
L
H
Z
Z
MON
L
H
L
H
1
Copyright
© Potato Semiconductor Corporation
PO49FCT3805B
3.3V Dual 1:5 CMOS Clock Buffered Driver
800MHz TTL/CMOS Potato Chip
08/01/06
Maximum Ratings
Description
Storage Temperature
Operation Temperature
Operation Voltage
Input Voltage
Output Voltage
Max
-65 to 150
-40 to 85
-0.5 to +4.6
-0.5 to +5.5
-0.5 to Vcc+0.5
Unit
°C
°C
V
V
V
Note:
stresses greater than 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 specification is not implied.
DC Electrical Characteristics
Symbol
Description
Output High voltage
Output Low voltage
Input High voltage
Input Low voltage
Input High current
High Impedance
Output current
High Impedance
Output current
Input Low current
Clamp diode voltage
Test Conditions
Vcc=3V Vin=V
IH
or V
IL
, I
OH
= -12mA
Vcc=3V Vin=V
IH
or V
IL
, I
OH
=12mA
Guaranteed Logic HIGH Level (Input Pin)
Guaranteed Logic LOW Level (Input Pin)
Vcc = 3.6V and Vin = 5.5V
Vcc = 3.6V and Vo = Vcc
Vcc = 3.6V and Vo = 0V
Vcc = 3.6V and Vin = 0V
Vcc = Min. And
I
IN
= -18mA
Min
Typ
Max
Unit
V
OH
V
OL
V
IH
V
IL
I
IH
I
OZH
I
OZL
I
IL
V
IK
Notes:
1.
2.
3.
4.
5.
2.4
-
2
-0.5
-
-
-
-
-
3
0.3
-
-
-
-
-
-
-0.7
-
0.5
+5.5
0.8
50
1
-1
-50
-1.2
V
V
V
V
uA
uA
uA
uA
V
For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
Typical values are at Vcc = 3.3V, 25
°C
ambient.
This parameter is guaranteed but not tested.
Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
VoH = Vcc – 0.6V at rated current
2
Copyright
© Potato Semiconductor Corporation
PO49FCT3805B
3.3V Dual 1:5 CMOS Clock Buffered Driver
800MHz TTL/CMOS Potato Chip
08/01/06
Power Supply Characteristics
Symbol
Description
Quiescent Power Supply Current
Test Conditions (1)
Vcc=Max, Vin=Vcc or GND
Min
Typ
Max
Unit
Icc
Q
Notes:
1.
2.
3.
4.
-
0.1
30
uA
For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
Typical values are at Vcc = 3.3V, 25°C ambient.
This parameter is guaranteed but not tested.
Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
Capacitance (T
A
= +25°C, f= 1MHz)
Parameters (1)
Description
Input Capacitance
Output Capacitance
Test Conditions
Vin = 0V
Vout = 0V
Typ
Max
Unit
Cin
Cout
Notes:
3
-
4
6
pF
pF
1 This parameter is determined by device characterization but not production tested.
Switching Characteristics
Symbol
Description
Propagation Delay INA to OAn, INB to OBn
Output Enable Time
Output Disable Time
Rise/Fall Time
Pulse Skew (Same Package)
Output Pin to Pin Skew (Same Package)
Output Skew (Different Package)
Input Frequency
Input Frequency
Input Frequency
Input Frequency
Test Conditions (1)
CL = 15pF
CL = 15pF
CL = 15pF
0.8V – 2.0V
CL = 15pF, 125MHz
CL = 15pF, 125MHz
CL = 15pF, 125MHz
CL = 5 0 p F
CL =15pF
CL = 5pF
CL = 2pF
Max
Unit
t
PLH &
t
PHL
t
PZH or
t
PZL
t
PHZ or
t
PLZ
tr/tf
tsk(p)
tsk(o)
tsk(pp)
fmax
fmax
fmax
fmax
Notes:
2.4
2.5
2.5
0.8
300
80
400
100
300
600
800
ns
ns
ns
ns
ps
ps
ps
MHz
MHz
MHz
MHz
1. See test circuits and waveforms.
2. tpLH, tpHL, tsk(p), and tsk(o) are production tested. All other parameters guaranteed but not production tested.
3. Airflow of 1m/s is recommended for frequencies above 133MHz
3
Copyright
© Potato Semiconductor Corporation
PO49FCT3805B
3.3V Dual 1:5 CMOS Clock Buffered Driver
800MHz TTL/CMOS Potato Chip
08/01/06
Test Waveforms
Test Circuit
500
Ω
50
Ω
50
Ω
500
Ω
4
Copyright
© Potato Semiconductor Corporation
PO49FCT3805B
3.3V Dual 1:5 CMOS Clock Buffered Driver
800MHz TTL/CMOS Potato Chip
08/01/06
Packaging Mechanical Drawing: 20 pin QSOP
Packaging Mechanical Drawing: 20 pin SOIC
5
Copyright
© Potato Semiconductor Corporation
