CDCLVP110 Datasheet, PDF (1/11 Pages) Texas Instruments – LOW-VOLTAGE 1:10 LVPECL/HSTL WITH SELECTABLE INPUT CLOCK DRIVER

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CDCLVP110
SCAS683A – JUNE 2002 – REVISED AUGUST 2002
LOW-VOLTAGE 1:10 LVPECL/HSTL
WITH SELECTABLE INPUT CLOCK DRIVER
FEATURES
• Distributes One Differential Clock Input Pair
LVPECL/HSTL to 10 Differential LVPECL
Clock Outputs
• Fully Compatible With LVECL/LVPECL/HSTL
• Single Supply Voltage Required, ±3.3-V or
±2.5-V Supply
• Selectable Clock Input Through CLK_SEL
• Low-Output Skew (Typ 15 ps) for
Clock-Distribution Applications
• VBB Reference Voltage Output for
Single-Ended Clocking
• Available in a 32-Pin LQFP Package
• Frequency Range From DC to 3.5 GHz
• Pin-to-Pin Compatible With MC100 Series
EP111, ES6111, LVEP111, PTN1111
LQFP PACKAGE
(TOP VIEW)
DESCRIPTION
The CDCLVP110 clock driver distributes one
differential clock pair of either LVPECL or HSTL
(selectable) input, (CLK0, CLK1) to ten pairs of
differential LVPECL clock (Q0, Q9) outputs with
minimum skew for clock distribution. The
CDCLVP110 can accept two clock sources into an
input multiplexer. The CLK0 input accepts either
LVECL/LVPECL input signals, while CLK1 accepts an
HSTL input signal when operated under LVPECL
conditions. The CDCLVP110 is specifically designed
for driving 50-Ω transmission lines.
The VBB reference voltage output is used if
single-ended input operation is required. In this case
the VBB pin should be connected to CLK0 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 CDCLVP110 is characterized for operation from
-40°C to 85°C.
V_CC
Q2
Q2
Q1
Q1
Q0
Q0
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
123 4 567 8
V_CC
Q7
Q7
Q8
Q8
Q9
Q9
V_CC
CLK_SEL
0
1
FUNCTION TABLE
ACTIVE CLOCK INPUT
CLK0, CLK0
CLK1, CLK1
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.
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 © 2002, Texas Instruments Incorporated