ICS8534BMI-13 REVISION C AUGUST 9, 2013

2

©2013 Integrated Device Technology, Inc.

ICS8534I-13 Data Sheet

LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/LVCMOS- TO-3.3V, 2.5V LVPECL/LVCMOS FANOUT BUFFER

Pin Description and Pin Characteristic Tables

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

CLK_EN

Input

Pullup

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

When LOW, Q outputs are forced low, nQ0 output is forced high. LVCMOS

/ LVTTL interface levels.

2,

3

XTAL_IN,

XTAL_OUT

Input

Crystal oscillator interface. XTAL_IN is the input.

XTAL_OUT is the output.

4VCC

Power

Positive supply pin.

5

CLK

Input

Pulldown

Clock input. LVCMOS / LVTTL interface levels.

6

CLK_SEL

Input

Pullup

Clock select input. When HIGH, selects XTAL inputs.

When LOW, selects CLK input. LVCMOS / LVTTL interface levels.

7, 12

VEE

Power

Negative supply pins.

8VCCO_LVPECL

Power

Output power supply mode for LVPECL clock outputs.

9, 10

Q0, nQ0

Output

Differential clock outputs. LVPECL interface levels.

11

nc

Unused

No connect.

13, 15, 16

Q1, Q2, Q3

Output

Single ended clock outputs. LVCMOS / LVTTL interface levels.

14

VCCO_LVCMOS

Power

Output power supply mode for LVCMOS / LVTTL clock outputs.

Symbol

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

CIN

Input Capacitance

Crystal Not Included

4

pF

CPD

Power Dissipation

Capacitance (per

output)

Q[1:3]

VCC, VCC_LVCMOS = 3.465V

8

pF

VCC, VCC_LVCMOS = 2.625V

5

pF

RPULUP

Input Pullup Resistor

51

k



RPULLDOWN

Input Pulldown Resistor

51

k



ROUT

Output Impedance

Q[1:3]

VCC, VCC_LVCMOS = 3.465V

15



VCC, VCC_LVCMOS = 2.625V

20

