ICS574
ZERO DELAY, LOW SKEW BUFFER ZDB
IDT™/ ICS™
ZERO DELAY, LOW SKEW BUFFER 4
ICS574 REV F 092509
DC Electrical Characteristics
Unless stated otherwise, VDD = 3.3 V, Ambient Temperature -40 to +85° C
AC Electrical Characteristics
Unless stated otherwise, VDD = 3.3 V, Ambient Temperature -40 to +85° C
Notes:
1. Stresses beyond those listed in Absolute Maximum Ratings can permanently damage the device. Prolonged
exposure to levels above the operating limits but below the Absolute Maximum Ratings may affect device reliability.
2. With CLKIN = 160 MHz, FBIN to CLK4.
Using Spread Spectrum Input Clocks
The ICS574 uses IDT’s Spread Smart technology, allowing it to accurately track (pass through) any clocks that
implement spread spectrum techniques.
Parameter Symbol Conditions Min. Typ. Max. Units
Operating Supply Voltage VDD 3 5.5 V
Input High Voltage V
IH
VDD/2+1 V
Input Low Voltage V
IL
VDD/2-1 V
Output High Voltage, CMOS
level
V
OH
I
OH
= -5 mA VDD-0.4 V
Output High Voltage V
OH
I
OH
= -18 mA 2.4 V
Output Low Voltage V
OL
I
OL
= 18 mA 0.4 V
IDD Operating Supply Current No load (Note 2) 36 mA
Short Circuit Current I
OS
Each output ±65 mA
Input Capacitance C
IN
7pF
Parameter Symbol Conditions Min. Typ. Max. Units
Input Frequency, clock f
IN
FBIN from CLK4 20 160 MHz
Output Frequency, clock FBIN from CLK4 20 160 MHz
Output Clock Rise Time 0.8 to 2.0 V, 15 pF load 1.5 ns
Output Clock Fall Time 2.0 to 0.8 V, 15 pF load 1.5 ns
Output Clock Duty Cycle, 3.3 V At 1.4 V 40 50 60 %
Device-to-device Skew, equally
loaded
Rising edges at VDD/2 700 ps
Outpu-to-output Skew, equally
loaded
Rising edges at VDD/2 150 ps
Maximum Absolute Jitter 170 ps
Cycle-to-cycle Jitter, 15 pF loads 66.67 MHz outputs 250 ps
