DATA SHEET
Low Skew, 1-to-10 Differential-to-3.3V,
2.5V LVPECL/ECL Fanout Buffer
85310I-01
85310I-01 Rev I 7/8/15 1 ©2015 Integrated Device Technology, Inc.
General Description
The 85310I-01 is a low skew, high performance 1-to-10
Differential-to-2.5V/3.3V ECL/LVPECL Fanout Buffer. The CLKx,
nCLKx pairs can accept most standard differential input levels. The
85310I-01 is characterized to operate from either a 2.5V or a 3.3V
power supply. Guaranteed output and part-to-part skew
characteristics make the 85310I-01 ideal for those clock distribution
applications demanding well defined performance and repeatability.
Features
Ten differential 2.5V, 3.3V LVPECL/ECL output pair
Two selectable differential input pairs
Differential CLKx/nCLKx pairs can accept the following interface
levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL
Maximum output frequency: 700MHz
Translates any single ended input signal to 3.3V LVPECL levels
with resistor bias on nCLK input
Output skew: 30ps (typical)
Part-to-part skew: 140ps (typical)
Propagation delay: 2ns (typical)
Additive phase jitter, RMS: <0.13ps (typical)
LVPECL mode operating voltage supply range:
V
CC
= 2.375V to 3.8V, V
EE
= 0V
ECL mode operating voltage supply range:
V
CC
= 0V, V
EE
= -3.8V to -2.375V
-40°C to 85°C ambient operating temperature
Available in lead-free RoHS compliant package
9 10 11 12 13 14 15 16
32 31 30 29 28 27 26 25
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
VCC
CLK_SEL
CLK0
nCLK0
nc
CLK1
nCLK1
V
EE
Q3
nQ3
Q4
nQ4
Q5
nQ5
Q6
nQ6
VCCO
nQ9
Q9
nQ8
Q8
nQ7
Q7
V
CCO
Q0
nQ0
Q1
nQ1
Q2
nQ2
V
CCO
VCCO
Pin Assignment
85310I-01
32-Lead LQFP
7mm x 7mm x 1.4mm package body
Y Package
Top View
Block Diagram
CLK0
nCLK0
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
Q4
nQ4
Q5
nQ5
Q6
nQ6
Q7
nQ7
Q8
nQ8
Q9
nQ9
0
1
CLK1
nCLK1
CLK_SEL
Pulldown
Pullup
Pulldown
Pulldown
Pullup
LOW SKEW, 1-TO-10 DIFFERENTIAL-TO-3.3V, 2.5V LVPECL/ECL
FANOUT BUFFER
2 Rev I 7/8/15
85310I-01 DATA SHEET
Table 1. Pin Descriptions
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Number Name Type Description
1V
CC
Power Positive supply pin.
2 CLK_SEL Input Pulldown
Clock select input. When HIGH, selects CLK1, nCLK1 inputs. When LOW,
selects CLK0, nCLK0 inputs. LVCMOS / LVTTL interface levels.
3 CLK0 Input Pulldown Non-inverting differential clock input.
4 nCLK0 Input Pullup Inverting differential clock input.
5 nc Unused No connect.
6 CLK1 Input Pulldown Non-inverting differential clock input.
7 nCLK1 Input Pullup Inverting differential clock input.
8V
EE
Power Negative supply pin.
9, 16, 25, 32 V
CCO
Power Output supply pins.
10, 11 nQ9, Q9 Output Differential output pair. LVPECL interface levels.
12, 13 nQ8, Q8 Output Differential output pair. LVPECL interface levels.
14, 15 nQ7, Q7 Output Differential output pair. LVPECL interface levels.
17, 18 nQ6, Q6 Output Differential output pair. LVPECL interface levels.
19, 20 nQ5, Q5 Output Differential output pair. LVPECL interface levels.
21, 22 nQ4, Q4 Output Differential output pair. LVPECL interface levels.
23, 24 nQ3, Q3 Output Differential output pair. LVPECL interface levels.
26, 27 nQ2, Q2 Output Differential output pair. LVPECL interface levels.
28, 29 nQ1, Q1 Output Differential output pair. LVPECL interface levels.
30, 31 nQ0, Q0 Output Differential output pair. LVPECL interface levels.
Symbol Parameter Test Conditions Minimum Typical Maximum Units
C
IN
Input Capacitance 4 pF
R
PULLUP
Input Pullup Resistor 51 k
R
PULLDOWN
Input Pulldown Resistor 51 k
Rev I 7/8/15 3 LOW SKEW, 1-TO-10 DIFFERENTIAL-TO-3.3V, 2.5V LVPECL/ECL
FANOUT BUFFER
85310I-01 DATA SHEET
Absolute Maximum Ratings
NOTE: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.
These ratings are stress specifications only. Functional operation of product at these conditions or any conditions beyond
those listed in the DC Characteristics or AC Characteristics is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect product reliability.
DC Electrical Characteristics
Table 3A. Power Supply DC Characteristics, V
CC
= V
CCO
= 2.375V to 3.8V; V
EE
= 0V, T
A
= -40°C to 85°C
Table 3B. LVCMOS/LVTTL DC Characteristics, V
CC
= V
CCO
= 2.375V to 3.8V; V
EE
= 0V, T
A
= -40°C to 85°C
Item Rating
Supply Voltage, V
CC
4.6V
Inputs, V
I
-0.5V to V
CC
+ 0.5V
Outputs, I
O
Continuous Current
Surge Current
50mA
100mA
Package Thermal Impedance,
JA
47.9C/W (0 lfpm)
Storage Temperature, T
STG
-65C to 150C
Symbol Parameter Test Conditions Minimum Typical Maximum Units
V
CC
Positive Supply Voltage 2.375 3.3 3.8 V
V
CCO
Output Supply Voltage 2.375 3.3 3.8 V
I
EE
Power Supply Current 120 mA
Symbol Parameter Test Conditions Minimum Typical Maximum Units
V
IH
Input High Voltage
V
CC
= 3.3V 2 V
CC
+ 0.3 V
V
CC
= 2.5V 1.7 V
CC
+ 0.3 V
V
IL
Input Low Voltage
V
CC
= 3.3V -0.3 0.8 V
V
CC
= 2.5V -0.3 0.7 V
I
IH
Input High Current CLK_SEL V
CC
= V
IN
= 3.8V 150 µA
I
IL
Input Low Current CLK_SEL V
CC
= 3.8V, V
IN
= 0V -5 µA

85310AYI-01LFT

Mfr. #:
Manufacturer:
IDT
Description:
Clock Buffer LVPECL Fanout Buffer
Lifecycle:
New from this manufacturer.
Delivery:
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