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INTEGRATED CIRCUITS
PTN2111 1:10 LVDS clock distribution device
Product Data 2001 Jun 19
Philips Semiconductors
Philips Semiconductors
Product Data
1:10 LVDS clock distribution device
PTN2111
FEATURES
* 100 ps part-to-part skew * 35 ps output-to-output skew * Differential design * Meets LVDS specification for driver outputs and receiver inputs * Reference voltage available output VBB * Low voltage VCC range of +2.375 V to 2.625 V * High signalling rate capability (above 622 MHz) * Supports open, short, and terminated input fail-safe (HIGH output
state)
PIN CONFIGURATION
25 GND 24 Q3 23 Q3 22 Q4 21 Q4 20 Q5 19 Q5 18 Q6 17 Q6 Q9 10 Q8 12 Q8 13 Q7 14 Q7 15 GND 9 V CC 16 Q9 11 32 V CC 31 Q0 30 Q0 29 Q1 28 Q1 27 Q2 26 Q2
CK SI CLK0 CLK0 VBB CLK1 CLK1 EN
1 2 3 4 5 6 7 8
* Programmable drivers power off control * Available in LQFP32 package
DESCRIPTION
The PTN2111 is a low skew programmable 1:10 LVDS clock distribution device. The selected input signal is fanned out to 10 identical differential outputs. The PTN2111 features an 11-bit Shift Register with a serial-in and a Control Register. The purpose of the Control Register is to enable or power off each output clock channel and to select the clock input. The PTN2111 is specifically designed, modeled and produced with low skew as the key goal. Optimal design and layout serve to minimize gate-to-gate skew within a device. The final result is a dependable guaranteed low skew device. The PTN2111 can be used for high performance clock distribution in +2.5 V systems with LVDS levels. Designers can take advantage of the device's performance to distribute low skew clocks across the backplane or the board.
ST00013
PIN DESCRIPTION
PIN NUMBER 1 2 3 4 5 6 7 8 9, 25 16, 32 31, 29, 27, 24, 22, 20, 18, 15, 13, 11 30, 28, 26, 23, 21, 19, 17, 14, 12, 10 SYMBOL CK SI CLK0 CLK0 VBB CLK1 CLK1 EN GND VCC Q[0:9] NAME AND FUNCTION Control register clock Control register serial-in/CLK_SEL Differential input Differential input Output reference voltage Differential input Differential input Device enable/program Ground Supply voltage Differential outputs
Q[0:9]
Differential outputs
TYPE NUMBER PTN2111BD
NAME LQFP32
DESCRIPTION Plastic low profile quad flat package; 32 leads; body 7 x 7 x 1.4 mm
VERSION SOT358-1
2001 Jun 19
2
853-2263 26561
Philips Semiconductors
Product Data
1:10 LVDS clock distribution device
PTN2111
LOGIC DIAGRAM
SI EN Control Register 11-Bit 10 0 1 SEL CLK0 CLK1 0 1 Q9 9876543210 Counter 12 Shift Register 11-Bit CK
Q8
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
ST00010
2001 Jun 19
3
Philips Semiconductors
Product Data
1:10 LVDS clock distribution device
PTN2111
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. SYMBOL VCC IOSD ESD Tj Supply voltage Driver short circuit current Electrostatic discharge (Human Body Model 1.5 k, 100 pF) Junction temperature PARAMETER LIMITS -0.3 to 2.8 continuous >2 150 kV C UNIT V
RECOMMENDED OPERATING CONDITIONS
SYMBOL VCC VIR Tamb Supply voltage Receiver input voltage Operating ambient temperature range in free air PARAMETER MIN 2.375 GND -40 MAX 2.625 VCC +85 C UNIT V
DC ELECTRICAL CHARACTERISTICS
Tamb = -40 C to +85 C unless otherwise specified; VCC = 2.5 V 5% (Notes 1, 2) SYMBOL Driver VOD VOD VOS VOS IOS OSD Receiver VIDH VIDL IIN Device VBB ICCD CIN COUT VIH VIL II Output reference voltage Power supply current Input capacitance Output capacitance Logic input HIGH threshold Logic input LOW threshold Logic input current VCC = 2.5 V VCC = 2.5 V VCC = 2.5 V; VIN = VCC or GND 2 0.8 10 VCC = 2.5 V; IOUT 100 A All drivers enabled and loaded; input frequency = 800 MHz VIN = 0 V to VCC 1.15 1.25 190 5 5 1.35 230 V mA pF pF V V A Input threshold HIGH Input threshold LOW Input current VIN = 0 V VIN = VCC -100 50 50 100 100 100 mV mV A A Output differential voltage VOD magnitude change Offset voltage VOS magnitude change Output short circuit current RL = 100 RL = 100 RL = 100 RL = 100 VO = 0 V VOD = 0 V 15 7 1.125 1.25 250 350 450 50 1.375 50 40 15 mV mV V mV mA mA PARAMETER CONDITIONS MIN TYP2 MAX UNIT
NOTES: 1. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise specified. 2. All typical values are given for VCC = +2.5 V and Tamb = +25 C, unless otherwise specified. 3. CL includes probe and fixture capacitance. 4. Generator waveforms for all tests unless otherwise specified: f = 1 MHz, ZO = 50 , 50% duty cycle. 5. The PTN2111 is a current mode device, and only functions to datasheet specifications when a resistive load is applied to the drives outputs.
2001 Jun 19
4
Philips Semiconductors
Product Data
1:10 LVDS clock distribution device
PTN2111
AC ELECTRICAL CHARACTERISTICS (LVDS)
Tamb = -40 C to +85 C unless otherwise specified; VCC = 2.5 V 5% (Note 1) SYMBOL tTLH tTHL tPLH tPHL fMAX tskew PARAMETER Transition time LOW to HIGH Transition time HIGH to LOW Propagation delay to output Maximum input frequency Within-device skew Part-to-part skew Pulse skew NOTE: 1. Generator waveforms for all tests unless otherwise specified: f = 1 MHz, ZO = 50 , 50% duty cycle. 650 800 35 100 50 CONDITIONS RL = 100 ; CL = 5 pF RL = 100 ; CL = 5 pF MIN TYP 460 460 MAX 560 560 2 UNIT ps ps ns MHz ps ps ps
2001 Jun 19
5
Philips Semiconductors
Product Data
1:10 LVDS clock distribution device
PTN2111
CONTROL REGISTER SPECIFICATION
The PTN2111 is provided with an 11-bit shift register with a serial-in and a Control Register. The purpose is to enable or power-off each output clock channel and to select the clock input. The PTN2111 provides two working modes: Programmed mode, and Standard mode.
Table 1. Truth Table of State Machine Inputs
EN L SI L CK X OUTPUT All outputs enabled, Clock0 selected, Control Register disabled. All outputs enabled, Clock1 selected, Control Register disabled. First stage stores "L", other stages store the data of previous stage. First stage stores "H", other stages store the data of previous stage. Reset of the state machine, Shift register, and Control Register.
L
H
X
Programmed Mode (EN = 1)
The shift register has a serial input to load the working configuration. Once the configuration is loaded with 11 clock pulses, another clock pulse loads the configuration into the Control Register. To restart the configuration of the shift register, a reset of the state machine must be done with a clock pulse on CK, and the EN set to LOW. The Control Register can be configured only one time after each reset. D0 is the first bit shifted in, D10 is the last bit shifted in. Bit D0 controls Q9, D9 controls Q0, and D10 controls CLKIN. H L
H
H
Standard Mode (EN = 0)
In Standard Mode, the PTN2111 is not programmable. All clock buffer outputs are enabled. The LVDS clock input is selected from Clock0 or Clock1 with the SI pin, as shown in the Truth Table.
L
X
Table 2. Configuration of the Control Register
Control Register bit Function D0 Q9 D1 Q8 D2 Q7 D3 Q6 D4 Q5 D5 Q4 D6 Q3 D7 Q2 D8 Q1 D9 Q0 D10 CLK_SEL
Table 3. Truth Table of the Control Register
D10 L H X X = Don't Care Dn[0:9] H H L Qn[0:9] Clock0 Clock1 Qn output disabled
AC ELECTRICAL CHARACTERISTICS (Control Register)
SYMBOL fMAX ts th trem tw PARAMETER Maximum frequency of shift register Clock to SI setup time Clock to SI hold time Enable to clock removal time Minimum clock pulse width 5 CONDITIONS MIN 50 4.0 1.0 4.0 TYP MAX UNIT MHz ns ns ns ns
2001 Jun 19
6
Philips Semiconductors
Product Data
1:10 LVDS clock distribution device
PTN2111
LQFP32: plastic low profile quad flat package; 32 leads; body 7 x 7 x 1.4 mm
SOT358-1
2001 Jun 19
7
Philips Semiconductors
Product Data
1:10 LVDS clock distribution device
PTN2111
Data sheet status
Data sheet status [1] Objective data Preliminary data Product status [2] Development Qualification Definitions This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specification without notice, in order to improve the design and supply the best possible product. This data sheet contains data from the product specification. Philips Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Changes will be communicated according to the Customer Product/Process Change Notification (CPCN) procedure SNW-SQ-650A.
Product data
Production
[1] Please consult the most recently issued datasheet before initiating or completing a design. [2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
Definitions
Short-form specification -- The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition -- Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information -- Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Life support -- These products are not designed for use in life support appliances, devices or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes -- Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088-3409 Telephone 800-234-7381 (c) Copyright Philips Electronics North America Corporation 2001 All rights reserved. Printed in U.S.A. Date of release: 06-01 Document order number: 9397 750 08325
Philips Semiconductors
2001 Jun 19 8

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