ICS87158AF IDT, Integrated Device Technology Inc, ICS87158AF Datasheet

ICS87158AF

Manufacturer Part Number
ICS87158AF
Description
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet

Specifications of ICS87158AF

Function
Clock Generator
Operating Temperature (max)
85C
Operating Temperature (min)
0C
Package Type
SSOP
Pin Count
48
Mounting
Surface Mount
Lead Free Status / Rohs Status
Not Compliant
G
The ICS87158 is a high performance 1-to-6 LVPECL-to-
HCSL/LVCMOS ClockGenerator. The ICS87158 has one
differential input (which can accept LVDS, LVPECL, LVHSTL,
SSTL, HCSL), six differential HCSL output pairs and two
complementary LVCMOS/LVTTLoutputs. The six HCSL
output pairs can be individually configured for divide-by-1, 2,
and 4 or high impedance by use of select pins. The two
complementary LVCMOS/LVTTL outputs can be configured
for divide by 2, divide by 4, high impedance, or driven low for
low power operation.
The primary use of the ICS87158 is in Intel
that use Intel
the differential clock from the main system clock into HCSL
clocks used by Intel
ICS87158 is a highly flexible, general purpose device that
operates up to 600MHz and can be used in any situation where
Differential-to-HCSL translation is required.
87158AG
B
ENERAL
PWR_DWN#
LOCK
MULT_0
MULT_1
nPCLK
SEL_U
SEL_A
SEL_B
SEL_T
PCLK
IREF
®
D
Pentium 4 processors. The ICS87158 converts
D
IAGRAM
CONTROL
DIVIDER
ESCRIPTION
®
+
-
Pentium 4 processors. However, the
CURRENT
ADJUST
÷1,2,4
÷1,2,4
÷2,4
®
E8870 chipsets
V
HOST_P1
HOST_N1
GND_H
V
HOST_P6
HOST_N6
GND_H
V
HOST_P2
HOST_N2
GND_H
V
HOST_P3
HOST_N3
GND_H
V
HOST_P4
HOST_N4
GND_H
V
HOST_P5
HOST_N5
GND_H
V
MREF
nMREF
GND_H
DD
DD
DD
DD
DD
DD
DD
www.idt.com
1
F
P
Six HCSL outputs
Two LVCMOS/LVTTL outputs
One Differential LVPECL clock input pair
PCLK, nPCLK supports the following input types:
LVDS, LVPECL, LVHSTL, SSTL, HCSL
Maximum output frequency: 600MHz (maximum)
Output skew: 100ps (maximum)
Propagation delay: 4ns (maximum)
3.3V operating supply
0°C to 85°C ambient operating temperature
Available in both standard and lead-free RoHS compliant
packages
Industrial temperature information available upon request
EATURES
IN
1-
A
TO
6.1mm x 12.5mm x .92mm body package
7.5mm x 15.9mm x 2.3mm body package
SSIGNMENT
-6, LVPECL-
PWR_DWN#
MULT_0
MULT_1
GND_M
GND_R
nMREF
GND_L
GND_L
nPCLK
SEL_U
SEL_A
SEL_B
V
SEL_T
V
÷1, ÷2, ÷4 C
MREF
V
V
PCLK
DD
DD
GND
GND
DD
DD
V
V
V
_M
_R
_L
_L
DD
DD
DD
48-Lead TSSOP
48-Lead SSOP
G Package
F Package
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Top View
Top View
TO
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
-HCSL/LVCMOS
V
GND_H
V
HOST_P1
HOST_N1
GND_H
HOST_P2
HOST_N2
V
HOST_P3
HOST_N3
GND_H
HOST_P4
HOST_N4
V
HOST_P5
HOST_N5
GND_H
HOST_P6
HOST_N6
V
IREF
GND_I
V
LOCK
DD
DD
DD
DD
DD
DD
ICS87158
_I
_H
_H
_H
_H
G
REV. C JULY 25, 2010
ENERATOR

Related parts for ICS87158AF

ICS87158AF Summary of contents

Page 1

G D ENERAL ESCRIPTION The ICS87158 is a high performance 1-to-6 LVPECL-to- HCSL/LVCMOS ClockGenerator. The ICS87158 has one differential input (which can accept LVDS, LVPECL, LVHSTL, SSTL, HCSL), six differential HCSL output pairs and two complementary LVCMOS/LVTTLoutputs. The six HCSL ...

Page 2

ABLE IN ESCRIPTIONS ...

Page 3

ABLE IN HARACTERISTICS ...

Page 4

BSOLUTE AXIMUM ATINGS Supply Voltage Inputs Outputs Package Thermal Impedance Lead TSSOP 48 Lead SSOP Storage Temperature, T STG T 4A ABLE OWER UPPLY HARACTERISTICS ...

Page 5

T 4D. HCSL DC C ABLE HARACTERISTICS ...

Page 6

P ARAMETER 3.3V± HCSL GND 0V 3.3V HCSL UTPUT OAD EST V DD nPCLK V Cross Points PP PCLK GND IFFERENTIAL NPUT EVEL 80% Clock 20% Outputs ...

Page 7

HOST_Nx HOST_Px PERIOD t PW odc = t PERIOD HCSL UTPUT UTY YCLE ULSE nPCLK PCLK HOST_Nx HOST_Px ROPAGATION ELAY 87158AG 1- -6, LVPECL- TO MREF, nMREF x ...

Page 8

IRING THE IFFERENTIAL NPUT TO Figure 1 shows how the differential input can be wired to accept single ended levels. The reference voltage V_REF = V generated by the bias resistors R1, R2 and C1. This bias ...

Page 9

LVPECL LOCK NPUT NTERFACE The PCLK /nPCLK accepts LVPECL, CML, SSTL and other differential signals. Both V and V SWING input requirements. Figures show interface and V CMR examples for the PCLK/nPCLK input driven ...

Page 10

S E CHEMATIC XAMPLE Figure 3 shows an example of the ICS87158 LVPECL to HCSL Clock Generator schematic. In this example, the ICS87158 is configured as follows: PWR_DWN Mult_[1:0] = 10, Rref = 475 , IREF = 2.32mA, ...

Page 11

Power and Ground This section provides a layout guide related to power, ground and placement of bypass capacitors for a high- speed digital IC. This layout guide is a general recommen- dation. The actual board design will depend on the ...

Page 12

OGIC ONTROL NPUT The logic input control signals are 3.3V LVCMOS compatible. The logic control input contains ESD diodes and either pull-up or pull-down resistor as shown in Figure 5. The data sheet pro- vides pull-up or ...

Page 13

T 6A ABLE VS IR LOW ABLE OR JA Single-Layer PCB, JEDEC Standard Test Boards Multi-Layer PCB, JEDEC Standard Test Boards NOTE: Most modern PCB designs use multi-layered boards. The data in the second row ...

Page 14

ACKAGE UTLINE UFFIX FOR T 6A ABLE ACKAGE IMENSIONS ...

Page 15

ABLE RDERING NFORMATION ...

Page 16

...

Page 17

We’ve Got Your Timing Solution. 6024 Silver Creek Valley Road San Jose, CA 95138 © 2010 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT, the IDT logo, ICS and HiPerClockS are trademarks of ...

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