ICS580-01
GLITCH-FREE CLOCK MULITPLEXER CLOCK MULTIPLEXER
IDT™ / ICS™
GLITCH-FREE CLOCK MULITPLEXER 7
ICS580-01 REV L 051310
AC Electrical Characteristics
Unless stated otherwise, VDD = 3.3V ±5%, Ambient Temperature -40 to +85° C
Note 1. Frequencies less than the minimum may cause a timeout which will not guarantee glitch-free switching unless the clock
is actually stopped.
Note 2: Assumes identically loaded outputs with identical rise times, measured at VDD/2.
Note 3: Output duty cycle is set by duty cycle of input clock at VDDC/2.
Input Low Voltage V
IL
INA and INB only
Note 3
(VDDC/2)-1 V
Input Capacitance C
IN
4pF
Output High Voltage V
OH
I
OH
= -12 mA VDDC-0.5 V
Output Low Voltage V
OL
I
OL
= 12 mA 0.5 V
Short Circuit
Current
I
OS
±70 mA
On-chip pull-up
Resistor
R
PU
Non-clock inputs
Pull-up to VDDC
250 kΩ
Parameter Symbol Conditions Min. Typ. Max. Units
Input Frequency
INA and INB, Note 1
f
IN
VDDC = 5V 1/timeout 270 MHz
VDDC = 3.3V 1/timeout 220 MHz
VDDC = 2.7V 1/timeout 180 MHz
Propagation Delay
INA or INB to output
VDDC = 5V 4 8 ns
VDDC = 3.3V 5 10 ns
VDDC = 2.7V 6 12 ns
Transition Detector
Timeout, DIV = 0
VDDI = 5V 175 350 750 ns
VDDI = 3.3V 500 1000 2000 ns
VDDI = 2.7V 750 1500 3000 ns
Transition Detector
Timeout, DIV = 1
VDDI = 5V 20 40 80 ns
VDDI = 3.3V 55 110 210 ns
VDDI = 2.7V 100 200 400 ns
Output Clock Rise Time 1.5 ns
Output Clock Fall Time 1.5 ns
Output Clock Skew
CLK1 to CLK2
Note 2
-250 0 250 ps
Parameter Symbol Conditions Min. Typ. Max. Units
