551MLFT Datasheet 551MLFT, 551MILFT, 551MILF | P1-P3

DATASHEET

1 TO 4 CLOCK BUFFER ICS551

IDT™

1 TO 4 CLOCK BUFFER 1

ICS551 REV P 051310

Description

The ICS551 is a low cost, high-speed single input to

four output clock buffer. Part of IDT’s ClockBlocks

family, this is our lowest cost, small clock buffer.

See the ICS552-02B for monolithic dual version of the

ICS551 in a 20 pin QSOP.

IDT makes many non-PLL and PLL based low skew

output devices as well as Zero Delay Buffers to

synchronize clocks. Contact IDT for all of your clocking

needs.

Features

• Low skew (250 ps) outputs

• Pb-free packaging

• Low cost clock buffer

• Packaged in 8-pin SOIC

• Input/Output clock frequency up to 160 MHz

• Non-inverting output clock

• Ideal for networking clocks

• Operating Voltages of 3.3 and 5.0 V

• Output Enable mode tri-states outputs

• Advanced, low power CMOS process

• Commercial and industrial temperature versions

Block Diagram

ICLK

Output Enable

ICS551

1 TO 4 CLOCK BUFFER FAN OUT BUFFER

IDT™

1 TO 4 CLOCK BUFFER 2

ICS551 REV P 051310

Pin Assignment

Pin Descriptions

External Components

A minimum number of external components are required for proper operation. A decoupling capacitor of

0.01 µF should be connected between VDD on pin 7 and GND on pin 6, as close to the device as possible.

A 33Ω series terminating resistor may be used on each clock output if the trace is longer than 1 inch.

ICLK

VDD

GND

8 Pin (150 mil) SOIC

Number

Name

Type

Pin Description

1 ICLK Input Clock input. Internal pull-up resistor.

2 Q1 Output Clock output 1.

3 Q2 Output Clock output 2.

4 Q3 Output Clock output 3.

5 Q4 Output Clock output 4.

6 GND Power Connect to ground.

7 VDD Power Connect to 3.3 V or 5.0 V.

8 OE Input Output Enable. Tri-states outputs when low. Internal pull-up resistor.

ICS551

1 TO 4 CLOCK BUFFER FAN OUT BUFFER

IDT™

1 TO 4 CLOCK BUFFER 3

ICS551 REV P 051310

Absolute Maximum Ratings

Stresses above the ratings listed below can cause permanent damage to the ICS551. These ratings, which

are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the

device at these or any other conditions above those indicated in the operational sections of the

specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can

affect product reliability. Electrical parameters are guaranteed only over the recommended operating

temperature range.

Recommended Operation Conditions

Item Rating

Supply Voltage, VDD 7 V

All Inputs and Outputs -0.5 V to VDD+0.5 V

Ambient Operating Temperature, Commercial 0 to +70° C

Ambient Operating Temperature, Industrial -40 to +85° C

Storage Temperature -65 to +150° C

Junction Temperature 125° C

Soldering Temperature 260° C

Parameter Min. Typ. Max. Units

Ambient Operating Temperature -40 – +85 ° C

Power Supply Voltage (measured in respect to GND) +3.0 +5.5 V

P1-P3 P4-P6 P7-P9

551MLFT

Mfr. #:

Buy 551MLFT

Manufacturer:

IDT

Description:

Clock Buffer 1 TO 4 CLOCK BUFFER

Lifecycle:

New from this manufacturer.

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551MLFT

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