ICS95V847 Datasheet, PDF (1/9 Pages) Integrated Circuit Systems – 2.5V Wide Range Frequency Clock Driver (45MHz - 233MHz)

Integrated
Circuit
Systems, Inc.
ICS95V8 47
2.5V Wide Range Frequency Clock Driver (45MHz - 233MHz)
Recommended Application:
• Zero Delay Board Fan Out, SO-DIMM
• Provides complete DDR registered DIMM solution
with ICSSSTV16857, ICSSSTV16859 or
ICSSSTV32852
Product Description/Features:
• Low skew, low jitter PLL clock driver
• 1 to 5 differential clock distribution (SSTL_2)
• Feedback pins for input to output synchronization
• Spread Spectrum tolerant inputs
Switching Characteristics:
• CYCLE - CYCLE jitter: <60ps
• OUTPUT - OUTPUT skew: <60ps
• Period jitter: ±30ps
• DUTY CYCLE: 49.5% - 50.5%
Pin Configuration
GND
1
CLKC0
2
CLKT0
3
GND
4
VDD
5
CLK_INT
6
CLK_INC
7
AVDD
8
AGND
9
CLKC1 10
CLKT1 11
VDD 12
24 CLKT4
23 CLKC4
22 CLKC3
21 CLKT3
20 VDD
19 FB_INT
18 FB_INC
17 FB_OUTC
16 FB_OUTT
15 CLKT2
14 CLKC2
13 GND
24-Pin TSSOP
4.40 mm. Body, 0.65 mm. pitch
Functionality
Block Diagram
INPUTS
OUTPUTS
AVDD CLK_INT CLK_INC CLKT CLKC FB_OUTT FB_OUTC
PLL State
GND
L
H
L
H
L
H
Bypassed/off
FB_INT
GND
H
L
HL
H
L
Bypassed/off
FB_INC
2.5V
(nom)
L
H
L
H
L
H
on
CLK_INC
CLK_INT
PLL
2.5V
(nom)
H
L
HL
H
L
on
FB_OUTT
FB_OUTC
CLKT0
CLKC0
CLKT1
CLKC1
CLKT2
CLKC2
CLKT3
CLKC3
CLKT4
CLKC4
0718D—04/08/05