1

PS8492C 09/08/04

Block Diagram

PI49FCT3805D/E

3.3V, 2 x 1:5 CMOS Clock Driver

Description

Pericom Semiconductor’s PI49FCT3805D/E is composed of

non-inverting drivers. The outputs are congured into 2 groups of

one-in, ve-out with independent output enable. Group B has an

extra MON output. Excellent output signals to power and ground

ratio minimize power and ground noise and also improves output

performance.

Features

• Low output skew: <200ps

• Switching frequency up to 166 MHz

• Fast output rise/fall time: <1.0ns

• Low propagation delay: <2.5ns

• Low input capacitance: <6.0pF

• Balanced CMOS outputs

• Industrial Temperature: –40°C to +85°C

• 3.3V ±10% operation, 5V Input Tolerant

• Packaging (Pb-free & Green available):

– 20-pin 300-mil wide SOIC (S)

– 20-pin 150-mil wide QSOP (Q)

– 20-pin 209-mil wide SSOP (H)

– 20-pin 173-mil wide TSSOP (L)

Pin Description

Pin Name Deescription

OE

X

Hi-Z State Output Enable Inputs (Active Low)

IN

X

Clock Inputs

OA

N

, OB

N

Clock Outputs

MON Monitor Output

GND Ground

V

CC

Power

Truth Table

(1)

Inputs Outputs

OE

X

IN

X

OA

X

MON

L L L L

L H H H

H L Z L

H H Z H

Note:

1. H = High Voltage Level, L = Low Voltage Level,

Z = High Impedance

Pin Conguration

V

CCB

V

CC

1 2

0

OB0OA0 2 19

OB1OA1 3 18

GNDB

OA2 4 17

OB2

GNDA 5 16

OB3OA3 6 15

OB4OA4 7 14

MONGNDQ 8 13

OEBOEA 9 12

INBINA 10 11

OE

B

IN

A

OA

0Ð4

IN

B

OE

A

OB

0Ð4

MON

5

2

PS8492C 09/08/04

PI49FCT3805D/E

3.3V, 2 x 1:5 CMOS Clock Driver

Storage Temperature ................................................................. –65°C to +150°C

Ambient Temperature with Power Applied ................................ –40°C to +85°C

Input Voltage to GND Potential (Inputs & V

CC

Only) .................. –0.5V to 5.5V

Output Voltage to GND Potential (Outputs & I/O Only)...–0.5V to +V

CC

+0.5V

V

CC

Input Voltage........................................................................ –0.5V to +4.6V

Note:

Stresses greater than those 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 specication

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.)

Notes:

1. For Max. or Min. conditions, use appropriate value specied under Electrical Characteristics for the applicable device type.

2. Typical values are at V

CC

= 3.3V, +25°C ambient and maximum loading.

3. V

OH

= V

CC

– 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 (T

A

= –40°C to +85°C, V

CC

= 3.3V ± 0.3V)

Symbol Parameters Test Conditions

(1)

Min. Typ. Max. Units

V

OH

Output High Voltage

V

CC

= Min.,

V

IN

= V

IL

or V

IH

I

OH

= -0.1mA

I

OH

= -8mA

I

OH

= -12mA

V

CC

-0.2

2.4

(3)

2.4

(3)

-

3.0

V

OL

Output Low Voltage

V

CC

= Min.,

V

IN

= V

IL

or V

IH

I

OH

= 0.1mA

I

OH

= 8mA

I

OH

= 12mA

-

0.2

0.3

0.2

0.4

V

IH

Input High Voltage Low Logic 2.0 5.5

V

IL

Input Low Voltage High Logic -0.5 0.8

I

IH

Input High Current V

CC

= Max., V

IN

= 5.5V 1

µA

I

IL

Input Low Current V

CC

= Max., V

IN

= GND -1

I

OZH

I

OZL

High Impedance

output current

V

CC

= Max., all

outputs disabled

V

OUT

= V

CC

V

OUT

= GND

1

-1

V

IK

Clamp Diode Voltage V

CC

= Min., I

IN

= -18mA -0.7 -1.2 V

I

ODH

Output High Current

(4, 5)

V

OUT

= 1.5V, V

IN

= V

IL

or V

IH

, V

CC

= 3.3V -40 -74 -100

mAI

ODL

Output Low Current

(4, 5)

V

OUT

= 1.5V, V

IN

= V

IL

or V

IH

, V

CC

= 3.3V 50 90 130

I

OS

Short Circuit Current

(4, 5)

V

CC

= Max., V

OUT

= GND -60 -100 -120

3

PS8492C 09/08/04

PI49FCT3805D/E

3.3V, 2 x 1:5 CMOS Clock Driver

Notes:

1. For Max. or Min. conditions, use appropriate value specied under Electrical Characteristics for the applicable device.

2. Typical values are at V

CC

= 3.3V, +25°C ambient.

3. Per TTL driven input (V

IN

= V

CC

– 0.6V); all other inputs at V

CC

or GND.

Note:

1. This parameter is determined by device characterization but is not production tested.

Capacitance (T

A

= 25°C, f = 1 MHz)

Parameters

(1)

Description Test Conditions Typ Max. Units

C

IN

Input Capacitance V

IN

= 0V 3.0 4

pF

C

OUT

Output Capacitance V

OUT

= 0V — 6

Power Supply Characteristics

Parameters Description Test Conditions

(1)

Min. Typ.

(2)

Max. Units

I

CC

Quiescent Power

Supply Current

V

CC

= Max. V

IN

= GND or V

DD

0.1 30

µA

I

DD

Dynamic Supply

Current per Output

V

CC

= 3.6V,

C

L

= 15pF,

All Outputs Toggling

80 120

I

C

Total Power Supply

Current

V

CC

= 3.6V,

C

L

= 15pF,

All Outputs Toggling,

f

i

= 133 MHz

V

IN

= V

CC

or GND 100 135

mA/

MHz

V

IN

= V

CC

-0.6V or GND 100 135

V

CC

= 3.6V,

C

L

= 15pF,

All Outputs Toggling,

f

i

= 166 MHz

V

IN

= V

CC

or GND 120 160

V

IN

= V

CC

-0.6V or GND 120 160

∆I

CC

Supply Current per

inputs @ TTL High

V

CC

= Max. V

IN

= V

CC

-0.6V

(3)

45 300 µA

Part #	PI49FCT3805DQE
Description	Clock Fanout Buffer 10-OUT20-Pin QSOP
Category	IC
Availability	In Stock
Qty	9

PI49FCT3805DQE

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