sy55858u Micrel Semiconductor, sy55858u Datasheet

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sy55858u

Manufacturer Part Number
sy55858u
Description
2.5v/3.3v 3.0ghz Dual 2 X 2 Cml Crosspoint Switch W/internal Termination
Manufacturer
Micrel Semiconductor
Datasheet

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Micrel, Inc.
SuperLite is a trademark of Micrel, Inc.
M9999-110705
hbwhelp@micrel.com or (408) 955-1690
FEATURES
Guaranteed AC parameters over temperature:
• f
• t
• Within-device skew < 25ps
Non-blocking “switch architecture”
Configurable as dual 2:1 mux, dual 1:2 fanout buffer,
1:4 fanout buffer, quad buffer, or dual 2 x 2 switch
50 compatible outputs
Unique input termination and V
and AC-coupled input signals–CML or PECL
Fully differential inputs/outputs
TTL/CMOS compatible control logic
Wide supply voltage range: 2.3V to 3.6V
Wide operating temperature range: –40 C to +85 C
Available in 32-pin EPAD-TQFP package
MAX
r
/ t
f
< 120ps
> 3.0GHz (3Gbps)
T
pin for DC-coupled
2.5V/3.3V 3.0GH
CROSSPOINT SWITCH
W
/INTERNAL TERMINATION
1
crosspoint switch with a flexible input that accepts CML
or PECL, and a 50
mode logic) output. The non-blocking design allows any
input to connect to any output. Varying the state of the
select inputs allows SY55858U to be used in backup,
fault tolerant, protection and backplane distribution
applications.
internal termination design that allows access to the
termination network through V
the device to easily interface to other logic standards
such as AC-coupled or DC-coupled PECL/LVPECL
signals. For applications that require a single-channel
2 x 2 crosspoint, consider the SY55854.
DESCRIPTION
APPLICATIONS
The SY55858U is a low-voltage, high-speed dual 2 x 2
The signal inputs (DA
SONET/SDH optical transport
Backplane redundancy
Add-drop Multiplexers
Z
DUAL 2 x 2 CML
compatible differential CML (current-
0–1
and DB
T
pins. This feature allows
0–1
Rev.: D
Issue Date: November 2005
SuperLite™
) have a unique
SY55858U
SuperLite™
SuperLite™
Amendment: /0
SY55858U

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sy55858u Summary of contents

Page 1

... DUAL CML Z CROSSPOINT SWITCH /INTERNAL TERMINATION W DESCRIPTION The SY55858U is a low-voltage, high-speed dual crosspoint switch with a flexible input that accepts CML or PECL, and a 50 mode logic) output. The non-blocking design allows any pin for DC-coupled T input to connect to any output. Varying the state of the ...

Page 2

... DB1 2 (1) Package Range Marking Industrial SY55858UHI Industrial SY55858UHI Industrial SY55858UHG with Pb-Free bar-line indicator NiPdAu Industrial SY55858UHG with Pb-Free bar-line indicator NiPdAu = Electricals only. A Function Fanout Buffer or Redundant Distribution Dual Buffer or Crosspoint Dual Buffer or Crosspoint Fanout Buffer or Redundant Distribution ...

Page 3

... Channel A1 positive signal input. Channel A1 termination center-tap. For CML inputs, leave this pin floating. Otherwise, see Figures 5a–5d in “Input Interface Application” section. Channel A1 negative signal input. Channel A1 output select. TTL/CMOS input. 3 SuperLite™ SY55858U CML. CML. CML. CML. CML. CML. ...

Page 4

... See “Input Interface Applications” section for proper input connection. M9999-110705 hbwhelp@micrel.com or (408) 955-1690 SuperLite™ SY55858U QA0 CML /QA0 QA1 CML /QA1 QB0 CML /QB0 QB1 CML /QB1 16mA SY55858U Figure 2. Output Stage ...

Page 5

... CC V –1 +0 –40 to +85 260 –65 to +150 Max. Unit Condition 3.6 V 190 mA No load, over temp. Max. Unit Condition — V 0 2.7V +100 — 0.5V SY55858U Unit C/W C/W C/W = Max. = Max. = Max. ...

Page 6

... V No Load CC V – 0.650 V No Load CC 1. Load — 50 Environment 60 – one pin. The swing for common mode immunity OH OL Max. Unit Condition — Gbps — GHz 450 ps 1 — RMS 120 ps SuperLite™ SY55858U ...

Page 7

... OUT Q OUT 800mV (Q — /Q OUT OUT Differential /Q OUT Figure 4. Output Levels CML /D SY55858 VT V – 1.3V CC Figure 5b. CML-to-CML (AC-Coupled) Input Interface PECL /D SY55858 220 220 VT V – 1.3V CC Figure 5d. PECL-to-CML (AC-Coupled) Input Interface SuperLite™ SY55858U ...

Page 8

... Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify M9999-110705 hbwhelp@micrel.com or (408) 955-1690 + 1 (408) 474-1000 FAX WEB Micrel for any damages resulting from such use or sale. © 2005 Micrel, Incorporated. 8 Rev. 01 http://www.micrel.com SuperLite™ SY55858U ...

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