ICS8535I-21

LOW SKEW, 1-TO-2 LVCMOS/LVTTL-TO-3.3V LVPECL FANOUT BUFFER

IDT™ / ICS™ 3.3V LVPECL FANOUT BUFFER

2

ICS8535AGI-21 REV. A NOVEMBER 24, 2008

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, 5

VEE

Power

Negative supply pins.

2

CLK_EN

Input

Pullup

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

When LOW, Qx outputs are forced low, nQx outputs are forced high.

LVCMOS/LVTTL interface levels.

3

CLK_SEL

Input

Pulldown

Clock select input. When HIGH, selects CLK1 input.

When LOW, selects CLK0 input. LVCMOS/LVTTL interface levels.

4, 6

CLK0, CLK1

Input

Pulldown

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

7, 8, 14

VCC

Power

Power supply pins.

9, 10

nQ1, Q1

Output

Differential output pair. LVPECL interface levels.

11

nc

Unused

No connect.

12, 13

nQ0, Q0

Output

Differential output pair. LVPECL interface levels.

Symbol

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

CIN

Input Capacitance

4

pF

RPULLUP

Input Pullup Resistor

51

k

Ω

RPULLDOWN

Input Pulldown Resistor

51

k

Ω