sy89251v Micrel Semiconductor, sy89251v Datasheet - Page 2

• Manufacturer Part Number: sy89251v
• Description: Enhanced Differential Receiver
• Manufacturer: Micrel Semiconductor

Ordering Information
Pin Configuration
Pin Description
Micrel, Inc.
March 2009
Pin Number
6, 7
1
2
3
4
5
8
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
2. Tape and Reel.
Part Number
SY89251VMI
SY89251VMITR
SY89251VMG
SY89251VMGTR
Exposed Pad
/QHG, QHG
(Ultra-Small Outline)
Pin Name
VBB
VEE
VCC
EN
/Q
D
8-Pin MLF
(2)
(2)
(1)
®
Enable Input
Reference
Negative
Positive
Voltage
Output
Supply
Supply
Power
Power
Package
Type
100k
100k
100k
MLF-8
MLF-8
MLF-8
MLF-8
Type
Pin Function
Single-Ended PECL/ECL Feedback Output.
Single-Ended PECL/ECL Input: The signal input includes an internal 75kΩ pull-
down resistor. If input is left open, Q output will default to LOW.
Bias Voltage: V
input. Max sink/source current is ±0.5mA.
EN Input which is synchronized with data input (D) signal in a way that provides
glitchless gating of Q
Default is HIGH.
Negative Power Supply: V
supply. For PECL/LVPECL connect to ground.
Differential PECL/ECL Output: QHG defaults to LOW and /QHG defaults to HIGH
if D input is left open. See “Output Interface Applications” section for
recommendations on terminations.
Positive Power Supply: Bypass with 0.1µF//0.01µF low ESR capacitors as close
to VCC pin as possible.
Operating
Industrial
Industrial
Industrial
Industrial
Range
CC
A
2
–1.3V. Used as reference voltage when AC-coupling to the D
= 25°C, DC electricals only.
Truth Table
HG
EN
0
1
Pb-Free bar-line indicator
Pb-Free bar-line indicator
and /Q
EE
Package Marking
and exposed pad must be tied to most negative
HG
251 with
251 with
outputs. Includes internal 75kΩ pull-up resistor.
251
251
[e-mail]
QHG Output
Logic Low
Data
Pb-Free
Pb-Free
NiPdAu
NiPdAu
Finish
Sn-Pb
Sn-Pb
Lead
or [phone]
M9999-032609-A
SY89251V