Dual LVCMOS/LVTTL-To-Differential
2.5V/3.3V LVPECL Translator
General Description
The ICS85322I is a Dual LVCMOS / LVTTL-to- Differential 2.5V / 3.3V
LVPECL translator. The ICS85322I has selectable single ended clock
inputs. The single ended clock input accepts LVCMOS or LVTTL
input levels and translate them to 2.5V / 3.3V LVPECL levels. The
small outline 8-pin SOIC or TSSOP package makes this device ideal
for applications where space, high performance and low power are
important.
ICS85322I
DATASHEET
Features
• Two differential 2.5V/3.3V LVPECL outputs
• Selectable CLK0, CLK1 LVCMOS/LVTTL clock inputs
• CLK0 and CLK1 can accepts the following input levels: LVCMOS or
LVTTL
• Maximum output frequency: 267MHz
• Part-to-part skew: 250ps (maximum)
• 3.3V operating supply voltage (operating range 3.135V to 3.465V)
• 2.5V operating supply voltage (operating range 2.375V to 2.625V)
• -40°C to 85°C ambient operating temperature
• Lead-free (RoHS 6) packaging
Block Diagram
CLK0
Q0
nQ0
Q1
nQ1
Pin Assignment
Q0
Q1
nQ1
1
2
3
4
8
7
6
5
V
CC
CLK0
CLK1
V
EE
CLK1
ICS85322I
8-Lead SOIC
3.90mm x 4.92mm x 1.37mm body package
M Package
8-Lead TSSOP
3.0mm x 3.0mm body package
G Package
Top View
ICS85322I REVISION D MARCH 6, 2014
1
©2014 Integrated Device Technology, Inc.
ICS85322I Data Sheet
DUAL LVCMOS/LVTTL-TO-DIFFERENTIAL 2.5V/3.3V LVPECL TRANSLATOR
Pin Descriptions and Characteristics
Table 1. Pin Descriptions
Number
1, 2
3, 4
5
6
7
8
Name
Q0, nQ0
Q1, nQ1
V
EE
CLK1
CLK0
V
CC
Output
Output
Power
Input
Input
Power
Pullup
Pullup
Type
Description
Differential output pair. LVPECL interface levels.
Differential output pair. LVPECL interface levels.
Negative supply pin.
LVCMOS/LVTTL clock input.
LVCMOS/LVTTL clock input.
Positive supply pin.
NOTE:
Pullup
refers to internal input resistors. See Table 2,
Pin Characteristics,
for typical values.
Table 2. Pin Characteristics
Symbol
C
IN
R
PULLUP
Parameter
Input Capacitance
Input Pullup Resistor
Test Conditions
Minimum
Typical
4
51
Maximum
Units
pF
k
ICS85322I REVISION D MARCH 6, 2014
2
©2014 Integrated Device Technology, Inc.
ICS85322I Data Sheet
DUAL LVCMOS/LVTTL-TO-DIFFERENTIAL 2.5V/3.3V LVPECL TRANSLATOR
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 the 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.
Item
Supply Voltage, V
CC
Inputs, V
I
Outputs, I
O
Continuous Current
Surge Current
Junction Temperature, T
J
Storage Temperature, T
STG
Rating
4.6V
-0.5V to V
CC
+ 0.5V
50mA
100mA
125°C
-65C to 150C
DC Electrical Characteristics
Table 3A. Power Supply DC Characteristics,
V
CC
= 3.3V ± 5%, T
A
= -40°C to 85°C
Symbol
V
CC
I
EE
Parameter
Positive Supply Voltage
Positive Supply Current
Test Conditions
Minimum
3.135
Typical
3.3
Maximum
3.465
25
Units
V
mA
Table 3B. LVCMOS/LVTTL DC Characteristics,
V
CC
= 3.3V ± 5%, T
A
= -40°C to 85°C
Symbol
V
IH
V
IL
I
IH
I
IL
Parameter
Input High
Voltage
Input Low
Voltage
Input High
Current
Input Low
Current
CLK0, CLK1
CLK0, CLK1
CLK0, CLK1
CLK0, CLK1
V
CC
= V
IN
= 3.465V
V
CC
= V
IN
= 3.465V
-150
Test Conditions
Minimum
2
-0.3
Typical
Maximum
V
CC
+ 0.3
1.3
5
Units
V
V
µA
µA
Table 3C. LVPECL DC Characteristics,
V
CC
= 3.3V ± 5%, T
A
= -40°C to 85°C
Symbol
V
OH
V
OL
V
SWING
Parameter
Output High Voltage; NOTE 1
Output Low Voltage; NOTE 1
Peak-to-Peak Output
Voltage Swing
Test Conditions
V
CC
= V
IN
= 3.465V
V
CC
= V
IN
= 3.465V
Minimum
V
CC
– 1.4
V
CC
– 2.0
0.65
Typical
Maximum
V
CC
– 0.9
V
CC
– 1.7
1.0
Units
V
V
V
NOTE 1: Outputs terminated with 50 to V
CC
– 2V.
ICS85322I REVISION D MARCH 6, 2014
3
©2014 Integrated Device Technology, Inc.
ICS85322I Data Sheet
DUAL LVCMOS/LVTTL-TO-DIFFERENTIAL 2.5V/3.3V LVPECL TRANSLATOR
Table 3D. Power Supply DC Characteristics,
V
CC
= 2.5V ± 5%, T
A
= -40°C to 85°C
Symbol
V
CC
I
EE
Parameter
Positive Supply Voltage
Power Supply Current
Test Conditions
Minimum
2.375
Typical
2.5
Maximum
2.625
25
Units
V
mA
Table 3E. LVCMOS/LVTTL DC Characteristics,
V
CC
= 2.5V ± 5%, T
A
= -40°C to 85°C
Symbol
V
IH
V
IL
I
IH
I
IL
Parameter
Input High
Voltage
Input Low
Voltage
Input High
Current
Input Low
Current
CLK0, CLK1
CLK0, CLK1
CLK0, CLK1
CLK0, CLK1
V
CC
= V
IN
= 2.625V
V
CC
= V
IN
= 2.625V
-150
Test Conditions
Minimum
1.6
-0.3
Typical
Maximum
V
CC
+ 0.3
0.9
5
Units
V
V
µA
µA
Table 3F. LVPECL DC Characteristics,
V
CC
= 2.5V ± 5%, T
A
= -40°C to 85°C
Symbol
V
OH
V
OL
V
SWING
Parameter
Output High Voltage; NOTE 1
Output Low Voltage; NOTE 1
Peak-to-Peak Output
Voltage Swing
Test Conditions
Minimum
V
CC
– 1.4
V
CC
– 2.0
0.65
Typical
Maximum
V
CC
– 0.9
V
CC
– 1.7
1.0
Units
V
V
V
NOTE 1: Outputs terminated with 50 to V
CC
– 2V.
ICS85322I REVISION D MARCH 6, 2014
4
©2014 Integrated Device Technology, Inc.
ICS85322I Data Sheet
DUAL LVCMOS/LVTTL-TO-DIFFERENTIAL 2.5V/3.3V LVPECL TRANSLATOR
AC Electrical Characteristics
Table 4A. AC Electrical Characteristics,
V
CC
= 3.3V ± 5%, T
A
= -40°C to 85°C
Symbol
f
MAX
t
PD
tsk(pp)
t
R
/ t
F
odc
Parameter
Output Frequency
Propagation Delay;
NOTE 1
Part-to-Part Skew;
NOTE 2, 3
Output Rise/ Fall Time
Output Duty Cycle
20% to 80% @ 50MHz
300
40
Test Conditions
Minimum
Typical
Maximum
267
Units
MHz
ns
ps
ps
%
f
267MHz
0.5
1.9
250
700
60
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is
mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal equilibrium
has been reached under t
All parameters measured at 133MHz unless noted otherwise.hese conditions.
NOTE 1: Measured from V
CC
/2 point of the input to the differential output crosspoint.
NOTE 2: Defined as skew between outputs on different devices operating at the same supply voltages and with equal load conditions. Using
the same type of inputs on each device, the outputs are measured at the differential crosspoints.
NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.
Table 4B. AC Electrical Characteristics,
V
CC
= 2.5V ± 5%, T
A
= -40°C to 85°C
Symbol
f
MAX
t
PD
tsk(pp)
t
R
/ t
F
odc
Parameter
Output Frequency
Propagation Delay;
NOTE 1
Part-to-Part Skew;
NOTE 2, 3
Output Rise/ Fall Time
Output Duty Cycle
20% to 80% @ 50MHz
300
40
Test Conditions
Minimum
Typical
Maximum
215
Units
MHz
ns
ps
ps
%
f
215MHz
0.7
2.1
250
700
60
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is
mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal equilibrium
has been reached under t
All parameters measured at 133MHz unless noted otherwise.hese conditions.
NOTE 1: Measured from V
CC
/2 point of the input to the differential output crosspoint.
NOTE 2: Defined as skew between outputs on different devices operating at the same supply voltages and with equal load conditions. Using
the same type of inputs on each device, the outputs are measured at the differential crosspoints.
NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.
ICS85322I REVISION D MARCH 6, 2014
5
©2014 Integrated Device Technology, Inc.
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