sy58021u Micrel Semiconductor, sy58021u Datasheet - Page 2

• Manufacturer Part Number: sy58021u
• Description: Sy58021u 4ghz, 1 4 Lvpecl Fanout Buffer/ Translator With Internal Termination
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
M9999-082807
[e-mail] or [phone]
PACKAGE/ORDERING INFORMATION
VREF-AC
PIN DESCRIPTION
Pin Number
16-Pin MLF
14, 15
11, 12
VT
/IN
IN
8, 13
5, 16
9, 10
1, 4
6, 7
2
3
1
2
3
4
16
5
15
6
®
(MLF-16)
Exposed Pad
14
7
Pin Name
VREF-AC
/Q0, Q0,
/Q1, Q1,
/Q2, Q2,
/Q3, Q3
IN, /IN
13
GND,
8
VCC
VT
12
11
10
9
Q1
/Q1
/Q2
Q2
Pin Function
Differential Input: This input pair receives the signal to be buffered. Each pin of this pair
internally terminates with 50Ω to the VT pin. Note that this input will default to an
indeterminate state if left open. See “Input Interface Applications” section.
Input Termination Center-Tap: Each input terminates to this pin. The V
center-tap for each input (IN, /IN) to the termination network for maximum interface
flexibility. See “Input Interface Applications” section.
Reference Output Voltage: This output biases to V
to differential inputs. Connect V
capacitor to V
Positive Power Supply: Bypass with 0.1µF//0.01µF low ESR capacitors as close to the
V
Ground. Exposed pad must be connected to a ground plane that is the same potential as
the ground pin.
LVPECL Differential Output Pairs: Differential buffered output copy of the input signal. The
output swing is typically 800mV Proper termination is 50Ω to V
Unused output pairs may be left floating with no impact on jitter or skew.
See “LVPECL Output Termination” section.
CC
Ordering Information
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
2. Tape and Reel.
3. Pb-Free package recommended for new designs.
Part Number
SY58021UMI
SY58021UMITR
SY58021UMG
SY58021UMGTR
pins as possible.
CC
. See “Input Interface Applications” section.
(3)
(2)
(2, 3)
2
Package
MLF-16
MLF-16
MLF-16
MLF-16
Type
REF-AC
(1)
directly to the VT pin. Bypass with 0.01µF low ESR
Operating
Industrial
Industrial
Industrial
Industrial
Range
CC
–1.2V. It is used when AC-coupling
Pb-Free bar-line indicator
Pb-Free bar-line indicator
A
= 25°C, DC electricals only.
CC
021U with
021U with
Package
Marking
021U
021U
–2V at the receiving end.
T
pin provides a
Precision Edge
SY58021U
Pb-Free
Pb-Free
NiPdAu
NiPdAu
Finish
Sn-Pb
Sn-Pb
Lead
®