ICS8520 Datasheet, PDF (3/8 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-16 DIFFERENTIAL-TO-3.3V LVHSTL FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS8520
LOW SKEW, 1-TO-16
DIFFERENTIAL-TO-3.3V LVHSTL FANOUT BUFFER
TABLE 2. PIN CHARACTERISTICS
Symbol
CIN
RPULLUP
RPULLDOWN
Parameter
Input Capacitance
Input Pullup Resistor
Input Pulldown Resistor
CLK, nCLK
Test Conditions
Minimum
Typical
51
51
Maximum
4
Units
pF
KΩ
KΩ
TABLE 3. FUNCTION TABLE
Inputs
CLK
nCLK
Outputs
Q0 thru Q15 nQ0 thru nQ15
Input to Output Mode
Polarity
0
1
LOW
HIGH
Differential to Differential Non Inverting
1
0
HIGH
LOW
Differential to Differential Non Inverting
0
Biased; NOTE 1
LOW
HIGH
Single Ended to Differential Non Inverting
1
Biased; NOTE 1
HIGH
LOW
Single Ended to Differential Non Inverting
Biased; NOTE 1
0
HIGH
LOW
Single Ended to Differential
Inverting
Biased; NOTE 1
1
LOW
HIGH
Single Ended to Differential
Inverting
NOTE 1: Single ended use requires that one of the differential inputs be biased. The voltage at the biased input sets the
switch point for the single ended input. For LVCMOS and LVTTL levels the recommended input bias network is a resistor
to VCC, a resistor of equal value to ground and a 0.1µF capacitor from the input to ground. The resulting switch point is
approximately VCC/2 ± 300mV.
ICS8520DY
www.icst.com/products/hiperclocks.html
3
REV. B JULY 5, 2001