ICS8546-01 Data Sheet

LOW SKEW, 1-TO 6, CRYSTAL-TO-LVDS FANOUT BUFFER

ICS8546AG-01 REVISION A FEBRUARY 25, 2011

2

©2011 Integrated Device Technology, Inc.

Table 1. Pin Descriptions

NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.

Table 2. Pin Characteristics

Number

Name

Type

Description

1, 2

nQ2, Q2

Output

Differential output pair. LVDS interface levels.

3, 22

VDDO

Power

Output supply pins.

4, 5

nQ1, Q1

Output

Differential output pair. LVDS interface levels.

6

GND

Power

Power supply ground.

7, 8

nQ0, Q0

Output

Differential output pair. LVDS interface levels.

9,

16

CLK_SEL0,

CLK_SEL1

Input

Pulldown

Clock select pins. LVCMOS/LVTTL interface levels.

10,

11

XTAL_IN,

XTAL_OUT

Input

Parallel resonant crystal interface.

XTAL_OUT is the output, XTAL_IN is the input.

12

CLK_EN

Input

Pullup

Synchronizing clock enable. When HIGH, clock outputs follow clock input. When

LOW, the outputs are disabled. LVCMOS / LVTTL interface levels. See Table 3.

13

CLK0

Input

Pulldown

Single-ended clock input. LVCMOS/LVTTL interface levels.

14

CLK1

Input

Pulldown

Non-inverting differential clock input.

15

nCLK1

Input

Pullup

Inverting differential clock input.

17, 18

nQ5, Q5

Output

Differential output pair. LVDS interface levels.

19

VDD

Power

Positive supply pin.

20, 21

nQ4, Q4

Output

Differential output pair. LVDS interface levels.

23, 24

nQ3, Q3

Output

Differential output pair. LVDS interface levels.

Symbol

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

CIN

Input Capacitance

4pF

RPULLUP

Input Pullup Resistor

51

k

Ω

RPULLDOWN

Input Pulldown Resistor

51

k

Ω