CDCLVP215 Datasheet, PDF (1/10 Pages) Texas Instruments – LOW-VOLTAGE DUAL DIFFERENTIAL 1:5 LVPECL CLOCK DRIVER

CDCLVP215
www.ti.com.................................................................................................................................................... SCAS853A – APRIL 2008 – REVISED OCTOBER 2008
LOW-VOLTAGE DUAL DIFFERENTIAL 1:5 LVPECL
CLOCK DRIVER
FEATURES
1
•2 2× One Differential Clock Input Pair LVPECL to
5 Differential LVPECL Clock Outputs
• Fully Compatible With LVPECL/LVECL
• Supports a Wide Supply Voltage Range From
2.375 V to 3.8 V
• Open Input Default State
• Low-Output Skew (Typ 15 ps) for
Clock-Distribution Applications
• V_BB Reference Voltage Output for
Single-Ended Clocking
• Available in the QFN32 Package
• Frequency Range From DC to 3.5 GHz
• Pin-to-Pin Compatible With the MC100 Series
EP111, LVEP210, ES6111, LVEP111
QFN32 PACKAGE
(TOP VIEW)
V_CC
QA2
QA2
QA1
QA1
QA0
QA0
V_CC
24 23 22 21 20 19 18 17
25
16
26
15
27
14
28
13
29
12
30
11
31
10
32
9
1 234 5678
V_CC
QB2
QB2
QB3
QB3
QB4
QB4
V_CC
APPLICATIONS
• Designed for Driving 50-Ω Transmission Lines
• High Performance Clock Distribution
DESCRIPTION
The CDCLVP215 clock driver distributes two times one differential clock pair of LVPECL, (CLKA, CLKB) to 5
pairs of differential LVPECL clock (QA0..QA4, QB0..QB4) outputs with minimum skew for clock distribution. The
CDCLVP215 specifies low output-to-output skew. The CDCLVP215 is specifically designed for driving 50-Ω
transmission lines. When an output pair is not used, leaving it open is recommended to reduce power
consumption. If only one of the output pairs is used, the other output pair must be identically terminated to 50 Ω.
The V_BB reference voltage output is used if single-ended input operation is required. In this case, the V_BB pin
should be connected to CLKA or CLKB and bypassed to GND via a 10-nF capacitor.
However, for high-speed performance up to 3.5 GHz, the differential mode is strongly recommended.
The CDCLVP215 is characterized for operation from –40°C to 85°C.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated