95V847AGLFT

Integrated
Circuit
Systems, Inc.
ICS95V847
0718E—11/24/08
Block Diagram
PLL
FB_INT
FB_INC
CLK_INC
CLK_INT
FB_OUTT
FB_OUTC
CLKT0
CLKT1
CLKT2
CLKT3
CLKT4
CLKC0
CLKC1
CLKC2
CLKC3
CLKC4
2.5V Wide Range Frequency Clock Driver (45MHz - 233MHz)
Pin Configuration
24-Pin TSSOP
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%
Functionality
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etatSLLP
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DNGL HLHL H
f
fo/dessapyB
DNGH LHLH L
f
fo/dessapyB
V5.2
)mon(
LHLHLH no
V5.2
)mon(
HLHLHL no
4.40 mm. Body, 0.65 mm. pitch
GND
CLKC0
CLKT0
GND
VDD
CLK_INT
CLK_INC
AVDD
AGND
CLKC1
CLKT1
VDD
CLKT4
CLKC4
CLKC3
CLKT3
VDD
FB_INT
FB_INC
FB_OUTC
FB_OUTT
CLKT2
CLKC2
GND
ICS95V847
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
2
ICS95V847
0718E—11/24/08
Pin Descriptions
This PLL Clock Buffer is designed for a V
DD
of 2.5V, an AV
DD
of 2.5V and differential data input and output levels.
ICS95V847 is a zero delay buffer that distributes a differential clock input pair (CLK_INT, CLK_INC) to five differential
pair of clock outputs (CLKT[4:0], CLKC[4:0]) and one differential pair feedback clock output (FB_OUT, FB_OUTC). The
clock outputs are controlled by input clock (CLK_INT, CLK_INC), the feedback clock (FB_INT, FB_INC) and the analog
power input (AV
DD
). When AV
DD
is grounded, the PLL is turned off and bypassed for test purposes.
The PLL in ICS95V847 clock driver uses the input clock (CLK_INC, CLK_INT) and the feedback clock (FB_INT,
FB_INC) to provide high-performance, low-skew, low-jitter differential output clocks (CLKT[4:0], CLKC[4:0]). ICS95V847
is also able to track Spread Spectrum Clock (SSC) for reduced EMI.
ICS95V847 is characterized for operation from 0°C to 85°C.
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3
ICS95V847
0718E—11/24/08
Absolute Maximum Ratings
Supply Voltage (VDD & AVDD). . . . . . . . . . . -0.5V to 4.6V
Logic Inputs . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.5V to V
DD
+ 0.5V
Ambient Operating Temperature . . . . . . . . . . 0°C to +85°C
Storage Temperature . . . . . . . . . . . . . . . . . . . -65°C to +150°C
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These
ratings are stress specifications only and functional operation of the device at these or any other conditions above those
listed in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions
for extended periods may affect product reliability.
Electrical Characteristics - Input/Supply/Common Output Parameters
T
A
= 0 - 85°C; Supply Voltage A
VDD
, V
DD
= 2.5 V +/- 0.2V (unless otherwise stated)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input High Current I
IH
V
I
= V
DD
or GND 5 µA
Input Low Current I
IL
V
I
= V
DD
or GND 5 µA
I
C
L
= 0pf @ 200MHz 148 mA
I
DDPD
C
L
= 0pf 100 µA
High Impedance
Output Current
I
OZ
V
DD
= 2.7V, Vout = V
DD
or
GND
±10 mA
Input Clamp Voltage V
IK
V
DD
= 2.3V Iin = -18mA -1.2
V
I
OH
= -1 mA V
DD
- 0.1 V
I
OH
= -12 mA 1.7V V
I
OL
=1 mA 0.1 V
I
OH
=12 mA 0.6 V
Input Capacitance
1
C
IN
V
I
= GND or V
DD
2.5 3.5 pF
1
Guaranteed by design at 233MHz, not 100% tested in production.
Operating Supply
Current
High-level output
voltage
V
OH
Low-level output voltage V
OL

95V847AGLFT

Mfr. #:
Manufacturer:
IDT
Description:
Clock Drivers & Distribution 1:5, 2.5V Phase-Lock Loop Clock Driver
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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