DATASHEET

OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS

ICS552-01

IDT™ / ICS™ OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS 1

ICS552-01

REV H 051310

Description

The ICS552-01 produces 8 low-skew copies of the

multiple input clock or fundamental, parallel-mode

crystal. Unlike other clock drivers, these parts do not

require a separate oscillator for the input. Using IDT’s

patented Phase-Locked Loop (PLL) to multiply the input

frequency, it is ideal for generating and distributing

multiple high-frequency clocks. This is a single chip

used for 3 different applications:

1) ICS552-01 (A mode) — an Oscillator mutiplier

2) ICS552-01 (B mode) — a Dual 1:4 buffer

3) ICS552-01 (C mode) — a 1:8 Oscillator buffer

Features (all)

• Packaged as 20-pin SSOP (QSOP)

• Pb-free packaging

• Operating voltages of 3.0 V to 5.5 V

• Industrial temperature available

Features (specific)

ICS552-01 (for A mode)

• Contains on-chip multiplier with selections of x1,

x1.33, x2, x2.66, x3, x3.33, x4, x4.66, x5, and x6

• Power-down and Tri-state modes

ICS552-01 (for B mode)

• Up to 200 MHz clock input/output at 3.3 V

• Low skew of 250 ps maximum for any bank of four

• Inputs can be connected together for a 1 to 8 buffer

with 250 ps skew between any outputs

• Non-inverting buffer mode

• Ideal for clock networks

• Output Enable mode tri-states outputs

• Full CMOS output swing with 25 mA output drive

capability at TTL levels

• Advanced, low power, sub-micron CMOS process

ICS552-01 (for C mode)

• Use with 25 MHz crystal for networking

• Use with 27 MHz crystal for MPEG

ICS552-01 (for A and C modes)

• Input frequency of 10.0 to 27.0 MHz

• Provides 8 low-skew outputs (<250 ps)

• Output clock duty cycle of 40/60 at 3.3 V

NOTE: The ICS552A-01 is recommended

for new designs

Block Diagram (ICS552-01—A mode)

Crystal

Buffer/

Crystal

Oscillator

GND

VDD

PLL

Multiplier

S3:S0

CLK1

CLK8

CLK7

CLK6

CLK5

CLK4

CLK3

CLK2

4

X2

10.0 to 27.0 MHz

crystal or clock input

External capacitors are

required with a crystal input.

X1