ICS853S024 Datasheet, PDF (1/16 Pages) Integrated Device Technology – LOW SKEW, 1-TO-24 DIFFERENTIAL-TO-3.3V, 2.5V LVPECL FANOUT BUFFER

PRELIMINARY
LOW SKEW, 1-TO-24 DIFFERENTIAL-TO-3.3V, 2.5V
LVPECL FANOUT BUFFER
ICS853S024
General Description
The ICS853S024 is a low skew, 1-to-24
ICS
Differential-to-3.3V, 2.5V LVPECL Fanout Buffer and
HiPerClockS™ _{a member of theHiPerClockS™ family of High}
Performance Clock Solutions from IDT. The CLK,
nCLK pair can accept most standard differential
input levels. The ICS853S024 is characterized to operate from
either a 3.3V or a 2.5V power supply. Guaranteed output skew
characteristics make the ICS853S024 ideal for those clock
distribution applications demanding well defined performance and
repeatability.
Features
• Twenty four LVPECL outputs.
• One differential clock input pair
• Differential input clock (CLK, nCLK) can accept the following
signaling levels: LVDS, LVPECL, LVHSTL, SSTL, HCSL
• Maximum output frequency: >1.5GHz
• Translates any single ended input signal to 3.3V/ 2.5V LVPECL
levels with resistor bias on nCLK input
• Output skew: 25ps (typical)
• t_R / t_F: 180ps (typical)
• Additive phase jitter, RMS: 0.111ps (typical) @ 312.5MHz
• Full 3.3V or 2.5V supply voltage
• 0°C to 70°C ambient operating temperature
• Available in lead-free (RoHS 6) packages.
.
Block Diagram
CLK ^Pulldown
nCLK ^Pullup
24
Q0:Q23
24 _nQ0:nQ23
Pin Assignment
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
VCC 1
48 nCLK
V_EE 2
47 CLK
Q0 3
nQ0 4
ICS853S024
46 nQ17
45 Q17
Q1 5
nQ1 6
Q2 7
nQ2 8
64-Lead TQFP, EPad
10mm x 10mm x 1mm
package body
44 nQ16
43 Q16
42 nQ15
41 Q15
Q3 9
nQ3 10
Q4 11
Y Package
Top View
40 nQ14
39 Q14
38 nQ13
nQ4 12
37 Q13
Q5 13
36 nQ12
nQ5 14
35 Q12
VEE 15
34 VCC
VCC 16
33 VCC
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
The Preliminary Information presented herein represents a product in pre-production. The noted characteristics are based on initial product characterization and/or qualification.
Integrated Device Technology, Incorporated (IDT) reserves the right to change any circuitry or specifications without notice.
LOW SKEW LVPECL FANOUT BUFFER
1
ICS853S024AY REV. A APRIL 30, 2008