FEATURES:
• Patented technology
• Operating frequency up to 700MHz with 2pf load
• Operating frequency up to 650MHz with 5pf load
• Operating frequency up to 450MHz with 15pf load
• Operating frequency up to 100MHz with 50pf load
• Very low output pin to pin skew < 100ps Max
• Very low pulse skew < 150ps Max
• VCC = 1.2V to 3.6V
• Propagation delay < 2.0ns max with 15pf load
• Low input capacitance: 3pf typical
• 1:4 fanout
• Packaging (Pb-free & Green available)
• Available in 8-pin TSSOP package
Pin Configuration
Logic Block Diagram
Pin Description
Y0
Y3
Y2
Y1
OE
CLK_IN
Y3
Y2
VDD
Y1
CLK_IN
OE
Y0
GND
1
2
3
4
8
7
6
5
Pin#
n
o
it
p
ir
c
s
e
D
tu
p
ni
k
c
ol
c
tn
a
r
el
o
T
V
5
2
1
4
6
3,5,7,8
.e
l
b
a
n
E
tu
p
tu
O
h
gi
H
e
vi
tc
A
st
u
p
tu
o
le
v
el
S
O
M
C
V
L
n
u
o
r
G
e
w
o
p
V
3
.
3
DESCRIPTION:
Potato Semiconductor’s PO74G304A is designed for
world top performance using submicron CMOS technol-
ogy to achieve 700MHz TTL output frequency with less
than 100ps output pin to pin skew.
PO74G304A is a CMOS 1 input to 4 outputs
Buffered driver to achieve 700MHz output frequency.
Typical applications are clock and signal distribution.
They are used for networking and communications
applications.
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.
FUNCTION TABLE
INPUTS
OUTPUT
CLKIN
OE
1Y (0:3)
L
H
L
H
L
L
H
H
L
L
L
H
1.2V-3.6V 1:4 CMOS Clock Buffered Driver
1
01/01/10
Potato Semiconductor Corporation
PO74G304A
www.potatosemi.com
700MHz TTL/CMOS Potato Chip
Maximum Ratings
DC Electrical Characteristics
Symbol
Description
Test Conditions
Min
Typ
Max
Unit
V
OH
Output High voltage
Vcc=3V Vin=V
IH
or V
IL
, I
OH
= -12mA
2.4
3
-
V
V
OL
Output Low voltage
Vcc=3V Vin=V
IH
or V
IL
, I
OH
=12mA
-
0.4
0.5
V
V
IH
Input High voltage
Guaranteed Logic HIGH Level (Input Pin)
2
-
5.5 V
V
IL
Input Low voltage
Guaranteed Logic LOW Level (Input Pin)
-0.5
-
0.8
V
I
IH
Input High current
Vcc = 3.6V and Vin = 5.5V
I
IL
Input Low current
Vcc = 3.6V and Vin = 0V
-
-
-1 uA
-
-
1 uA
V
IK
Clamp diode voltage
Vcc = Min. And
I
IN
= -18mA
-
-0.7
-1.2
V
Notes:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2.
Typical values are at Vcc = 3.3V, 25
°
C ambient.
3.
This parameter is guaranteed but not tested.
4.
Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
5.
VoH = Vcc – 0.6V at rated current
Description
Max
Unit
Storage Temperature
-65 to 150
°
C
Operation Temperature
-40 to 85
°
C
Operation Voltage
-0.5 to +4.6
V
Input Voltage
-0.5 to +5.5
V
Output Voltage
-0.5 to Vcc+0.5
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.
1.2V-3.6V 1:4 CMOS Clock Buffered Driver
2
01/01/10
Potato Semiconductor Corporation
PO74G304A
www.potatosemi.com
700MHz TTL/CMOS Potato Chip
Power Supply Characteristics
Symbol
Description
Test Conditions (1)
Min
Typ
Max
Unit
Icc
Q
Quiescent Power Supply Current
Vcc=Max, Vin=Vcc or GND
-
0.1
30
uA
Notes:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at Vcc = 3.3V, 25
°
C ambient.
3. This parameter is guaranteed but not tested.
4. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
Capacitance
Parameters (1)
Description
Test Conditions
Typ
Max
Unit
Cin
Input Capacitance
Vin = 0V
3
4
pF
Cout
Output Capacitance
Vout = 0V
-
6
pF
Notes:
1 This parameter is determined by device characterization but not production tested.
Switching Characteristics
t
i
n
U
x
a
M
)
1
(
s
n
o
i
t
i
d
n
o
C
t
s
e
T
n
o
i
t
p
i
r
c
s
e
D
l
o
b
m
y
S
t
PLH
Propagation Delay A to Bn
CL = 15pF
2.0
ns
t
PHL
Propagation Delay A to Bn
CL = 15pF
2.0
ns
tr/tf
Rise/Fall Time
0.8V – 2.0V
0.8
ns
tsk(p)
z
H
M
5
2
1
,
F
p
5
1
=
L
C
z
H
M
5
2
1
,
F
p
5
1
=
L
C
z
H
M
5
2
1
,
F
p
5
1
=
L
C
)
e
g
a
k
c
a
P
e
m
a
S
(
w
e
k
S
e
s
l
u
P
ps
ps
ps
150
100
400
tsk(o)
Output Pin to Pin Skew (Same Package)
tsk(pp)
Output Skew (Different Package)
fmax
F
p
0
5
=
L
C
y
c
n
e
u
q
e
r
F
t
u
p
n
I
100
MHz
fmax
F
p
5
1
=
L
C
y
c
n
e
u
q
e
r
F
t
u
p
n
I
450
MHz
fmax
F
p
5
=
L
C
y
c
n
e
u
q
e
r
F
t
u
p
n
I
650
MHz
fmax
F
p
2
=
L
C
y
c
n
e
u
q
e
r
F
t
u
p
n
I
700
MHz
Notes:
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
1.2V-3.6V 1:4 CMOS Clock Buffered Driver
3
01/01/10
Potato Semiconductor Corporation
PO74G304A
www.potatosemi.com
700MHz TTL/CMOS Potato Chip
Test Waveforms
Test Circuit
50Ohm
1.2V-3.6V 1:4 CMOS Clock Buffered Driver
4
01/01/10
Potato Semiconductor Corporation
PO74G304A
www.potatosemi.com
700MHz TTL/CMOS Potato Chip
Packaging Mechanical Drawing: 8 pin TSSOP
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
SEATING PLANE
8
Top-Marking
IC Ordering Information
Ordering Code
Package
Pb-free & Green
8pin 173Mil TSSOP
PO74G304ATU for Tube
PO74G304ATR for Tape & Reel
PO74G304AT
PO74G304AT
-40
°
C to 85
°
C
-40
°
C to 85
°
C
TA
IC Package Information
PACKAGE
CODE
PACKAGE
TYPE
QTY
PER
TUBE
TAPE
WIDTH
(mm)
TAPE
PITCH
(mm)
PIN 1 LOCATION
TAPE TRAILER
LENGTH
QTY
PER REEL
TAPE LEADER
LENGTH
12
8
Top Left Corner
39 (12”)
3000
64 (20”)
T
TSSOP 8
158
1.2V-3.6V 1:4 CMOS Clock Buffered Driver
5
01/01/10
Potato Semiconductor Corporation
PO74G304A
www.potatosemi.com
700MHz TTL/CMOS Potato Chip
Pb-free & Green
8pin 173Mil TSSOP