SY89321L_06 Datasheet, PDF (1/5 Pages) Micrel Semiconductor – 3.3V DIFFERENTIAL LVPECL-to-LVTTL TRANSLATOR

Micrel, Inc.
3.3V DIFFERENTIAL
LVPECL-to-LVTTL
TRANSLATOR
Precision Edge^®
Precision E^Sd^Yg⁸⁹e^3®21L
SY89321L
FEATURES
s 3.3V power supply
s 1.9ns typical propagation delay
s 275MHz f_MAX
s Differential LVPECL inputs
s 24mA LVTTL outputs
s Flow-through pinouts
s Internal input resistors: pulldown on IN, pulldown
and pullup on /IN
s Q output will default LOW with inputs open
s V_BB output
s Available in ultra-small 8-pin MLF^® (2mm x 2mm)
package
BLOCK DIAGRAM
IN
LVPECL
/IN
Q LVTTL
Precision Edge^®
DESCRIPTION
The SY89321L is a differential LVPECL-to-LVTTL
translator requiring only a single +3.3V power. Because
LVPECL (Low Voltage Positive ECL) levels are used, only
+3.3V and ground are required. The SY89321L is functionally
equivalent to the SY100EPT21L, but in an ultra-small
8-lead MLF^® package that features a 70% smaller footprint.
This ultra-small package and low skew single gate design
make the SY89321L ideal for applications that require the
translation of a clock or data signal where minimal space,
low power and low cost are critical.
V_BB allows a differential, single-ended, or AC-coupled
interface to the device. If used, the V_BB output should be
bypassed to V_CC with 0.01µF capacitor.
Under open input conditions, the /IN will be biased at
a V_CC/2 voltage level and the IN input will be pulled to
ground. This condition will force the Q output low to
provide added stability.
The SY89321L is compatible with positive ECL 100k
logic levels.
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
M9999-051006
[e-mail] or [phone]
1
Rev.: C Amendment: /0
Issue Date: May 2006