SY100EP210U Datasheet, PDF (1/9 Pages) Micrel Semiconductor – 2.5V/3.3V DUAL 1:5 DIFFERENTIAL LVECL/LVPECL/HSTL CLOCK DRIVER

Micrel, Inc.
2.5V/3.3V DUAL 1:5 DIFFERENTIAL
LVECL/LVPECL/HSTL CLOCK DRIVER
Precision Edge^®
Precisio^Sn^Y1E⁰⁰d^Eg^Pe^2®10U
SY100EP210U
FEATURES
■ 2.5V and 3.3V power supply options
■ Guaranteed AC parameters over temperature:
• f_MAX > 3.0GHz
• < 25ps within-device skew
• < 250ps t_r / t_f
• < 380ps propagation delay (differential)
■ Wide temperature range: –40°C to +85°C
■ Differential design
■ V_BB output
■ Fully compatible with industry standard 100K I/O
levels
■ Available in 32-pin TQFP Package
Precision Edge^®
DESCRIPTION
The SY100EP210U is a high-speed, precision low skew
1-to-5 dual differential clock driver. HSTL inputs can be
used when the EP210U is operating in PECL mode.
The EP210U specifically guarantees critical AC
parameters over temperature and voltage. Optimal design,
layout, and processing minimize skew within device and
from device-to-device.
The SY100EP210U, as with most other ECL devices,
can be operated from a positive V_CC supply in PECL mode.
This allows the EP210U to be used for high performance
clock distribution in +3.3V or +2.5V systems. Single-ended
input operation is limited to a V_CC ≥ 3.0V in PECL mode, or
V_EE ≤ –3.0V in ECL mode.
Designers can take advantage of the EP210U’s
performance to distribute low skew clocks across the
backplane or to multiple points on a board.
BLOCK DIAGRAM
CLKa
75kΩ ^VEE
/CLKa
75kΩ
V_EE V_CC ^75kΩ
Qa0
/Qa0
Qa1
/Qa1
Qa2
/Qa2
Qa3
/Qa3
Qa4
/Qa4
CLKb
75kΩ
V_EE
/CLKb
75kΩ
V_CC V_EE ^75kΩ
VBB
Precision Edge is a registered trademark of Micrel, Inc.
M9999-120505
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1
Qb0
/Qb0
Qb1
/Qb1
Qb2
/Qb2
Qb3
/Qb3
Qb4
/Qb4
Rev.: D Amendment: /0
Issue Date: December 2005