sy89854u Micrel Semiconductor, sy89854u Datasheet - Page 2

• Manufacturer Part Number: sy89854u
• Description: Precision Low Power 1 4 Lvpecl Fanout Buffer/translator With Internal Termination
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
Ordering Information
Pin Configuration
Pin Description
August 2007
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
2. Tape and Reel.
Part Number
SY89854UMG
SY89854UMGTR
Pin Number
15, 14
12, 11
10, 9
5, 16
8,13
1, 4
7, 6
2
3
(2)
Exposed Pad
Pin Name
VREF-AC
Q0, /Q0
Q1, /Q1
Q2, /Q2
Q3, /Q3
IN, /IN
GND,
VCC
Package Type
(1)
VT
MLF-16
MLF-16
Pin Function
Differential Input: This input pair is the signal to be buffered. These inputs accept
AC- or DC-coupled differential signals as small as 100mV (200mV
of this pair internally terminates to a VT pin through 50Ω. Note that this input will
default to an indeterminate state if left open. Please refer to the “Input Interface
Applications” section for more details.
Input Termination Center-Tap: Each side of the differential input pair terminates
to this pin. The VT pin provides a center-tap to a termination network for
maximum interface flexibility. See “Input Interface Applications” section for more
details.
Positive Power Supply. Bypass with 0.1µF||0.01µF low ESR capacitors as close
to the VCC pin as possible.
Differential 100K LVPECL Output: These LVPECL outputs are the precision, low
skew copies of the input signal. Terminate with 50Ω to V
pairs may be left floating with no impact on jitter. See “Output Interface
Applications” section.
Ground. Ground pin and exposed pad must be connected to the same ground
plane.
Reference Voltage: This output biases to V
the inputs (IN, /IN). Connect V
0.01µF low ESR capacitor to V
“Input Interface Applications” section for more details.
16-Pin MLF
Operating
Industrial
Industrial
Range
2
®
A
(MLF-16)
= 25°C, DC Electricals Only.
854U with Pb-free bar-line indicator
854U with Pb-free bar-line indicator
CC
REF-AC
. Maximum sink/source capability is 1.5mA. See
Package Marking
to the VT pin. Bypass VREF-AF pin with a
[e-mail]
CC
–1.2V. It is used when AC coupling
CC
–2V. Unused output
Pb-Free
Pb-Free
M9999-082907-C
NiPdAu
NiPdAu
or [phone]
Finish
Lead
PP
SY89854U
). Each pin