Preliminary Information
T73LVP20
3.3V LVTTL/LVCMOS-to-Differential
LVPECL Translator
Applications
LVPECL clock source
General Description
The TLSI T73LVP20 is a general-purpose LVTTL/LVCMOS-to-differential LVPECL translator operating
from a single +3.3V supply. The device accepts an LVTTL or LVCMOS input and provides differential
LVPECL outputs referenced to the positive supply rail. Both the tiny 6-pin SOT and 8-pin SOIC packages
make it ideal for applications which require the translation of a clock or a data signal, and where cost,
performance and size are of critical importance. The T73LVP20 is 100K PECL compatible and is a pin-for-
pin replacement for the MC100EPT20D (8-pin SOIC only).
Features
350pS typical propagation delay
Operating Frequency > 1 GHz
Differential LVPECL outputs
Flow-through pinout
Q output defaults low with input (D)
open
ESD rating >2000V (Human Body
Model) or >200V (Machine Model)
-40
o
C to +85
o
C operating temperature
range
Available as die, in tiny 6-pin SOT or
standard 8-pin SOIC packages
Figure 1. Functional Block Diagrams & Pin Assignments (Top View)
See pages 4 & 5 for package outline drawings
and
ordering information.
T73LVP20PI Page
1
Rev A February 23, 2004
TLSI Incorporated, 770 Park Avenue
, Huntington NY 11743 (631) 755-7005 Fax 631-755-7626 www.tlsi.com
T73LVP20 Preliminary Information
Table 1. Pin Description
Name
Description
Type
8-SOIC Pin #
6-SOT Pin #
NC
No Connection
-
1, 4, 6
4
Q
PECL data output
O
2
6
Q
n
PECL complementary data output
O
3
5
V
DD
Connect to +3.3V
P
8
1
D
LVTTL/LVCMOS data input
I
7
3
GND
Connect to ground
P
5
2
Legend: I = Input
O = Output
P = Power supply connection
Table 2. Absolute Maximum Ratings
Symbol Parameter
Conditions
Min
Typ
Max
Units
V
DD
Supply voltage
Referenced to GND
+5.0
V
V
IN
Input voltage
Referenced to GND
-0.5
V
DD
V
I
OUT
Output current
Continuous
50
mA
T
STG
Storage
temperature
-65 +150
o
C
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stress
specifications only and correct 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.
Table 3. Operating Conditions
Symbol Parameter
Conditions
Min
Typ
Max
Units
V
DD
Power Supply Voltage
+3.0
+3.3
+3.6
V
T
A
Ambient
Temperature
-40
+85
o
C
V
IH
Input HIGH Voltage
+2.0
V
V
IL
Input LOW Voltage
+0.8
V
T73LVP20PI Page
2
Rev A February 23, 2004
TLSI Incorporated, 770 Park Avenue
, Huntington NY 11743 (631) 755-7005 Fax 631-755-7626 www.tlsi.com
T73LVP20 Preliminary Information
Table 4. DC Characteristics
T
A
= -40
o
C to +85
o
C, V
DD
= +3.0V to +3.6V unless otherwise stated below.
Symbol Parameter
Conditions Min
Typ
Max
Units
I
IH
Input HIGH Current
V
IN
=+2.7V
100
A
I
IL
Input LOW Current
V
IN
= +0.5V
1
A
V
IK
Input Clamp Diode Voltage
I
IN
= -18mA
-1.2
V
-40
o
C 2220
2320
2420
mV
+25
o
C 2220
2320
2420
mV
V
OH
Output HIGH Voltage
(1, 2)
+85
o
C
V
DD
= +3.3V
2220 2320 2420 mV
-40
o
C 1420
1520
1620
mV
+25
o
C 1420
1520
1620
mV
V
OL
Output LOW Voltage
(1, 2)
+85
o
C
V
DD
= +3.3V
1420 1520 1620 mV
I
DD
Power Supply Current
No Load
23
mA
Notes:
1. The T73LVP20 is designed to meet these specifications after thermal equilibrium has been established.
The circuit is in a test socket or mounted on a printed circuit board.
2. Q and Qn outputs are loaded with 50 ohms to V
DD
-2 volts.
Table 5. AC Characteristics
T
A
= -40
o
C to +85
o
C, V
DD
= +3.0V to +3.6V
Symbol Parameter
Conditions
Min
Typ
Max
Units
t
PLH
Propagation
Delay
(1)
To Output Differential
350
500
ps
t
PHL
Propagation
Delay
(1)
To Output Differential
350
500
ps
t
r
/t
f
Output Rise/Fall time
20%-80%, Q, Q
n
80 130 200 ps
f
MAX
Maximum Input Frequency
LVTTL or LVCMOS
input
>
1 GHz
f
MAX
Maximum Input Frequency
(2)
750mV
peak-to-peak
sine wave centered
around 1.5V
>
1 GHz
Notes:
1. Q and Qn outputs are loaded with 50 ohms to V
DD
-2 volts.
2. Measured using a 750mV peak-to-peak, 50% duty cycle clock source.
T73LVP20PI
Page 3
Rev A February 23, 2004
TLSI Incorporated, 770 Park Avenue
, Huntington NY 11743 (631) 755-7005 Fax 631-755-7626 www.tlsi.com
T73LVP20 Preliminary Information
Figure 2. Package Outline (8-pin SOIC)
T73LVP20PI
Page 4
Rev A February 23, 2004
TLSI Incorporated, 770 Park Avenue
, Huntington NY 11743 (631) 755-7005 Fax 631-755-7626 www.tlsi.com
T73LVP20 Preliminary Information
Figure 3. Package Outline (6-pin SOT)
Table 6. Ordering Information
Part Number
Marking
Shipping/Packaging
No. of Pins Package
Temperature
T73LVP20-S08 T73LVP20
Tubes
8 SOIC
-40
C to +85C
T73LVP20-S08-TNR
T73LVP20
Tape & Reel
8
SOIC
-40
C to +85C
T73LVP20-SOT LVP20
Tubes
6
SOT
-40
C to +85C
T73LVP20-SOT-TNR
LVP20
Tape & Reel
6
SOT
-40
C to +85C
T73LVP20-DIE N/A
Dice
6
N/A
-40
C to +85C
T73LVP20PI
Page 5
Rev A February 23, 2004
TLSI Incorporated, 770 Park Avenue
, Huntington NY 11743 (631) 755-7005 Fax 631-755-7626 www.tlsi.com
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