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