PCKEP14PW-T NXP Semiconductors, PCKEP14PW-T Datasheet

Clock Synthesizer / Jitter Cleaner 2.5/3.3V PECL/ECL 1:5 CLK DRV

PCKEP14PW-T

Manufacturer Part Number
PCKEP14PW-T
Description
Clock Synthesizer / Jitter Cleaner 2.5/3.3V PECL/ECL 1:5 CLK DRV
Manufacturer
NXP Semiconductors
Type
Clock Driverr
Datasheet

Specifications of PCKEP14PW-T

Number Of Clock Inputs
2
Mode Of Operation
Differential
Output Frequency
>2000MHz
Output Logic Level
ECL/PECL
Operating Supply Voltage (min)
-2.375/2.375V
Operating Supply Voltage (typ)
-2.5/-3.3/2.5/3.3V
Operating Supply Voltage (max)
-3.8/3.8V
Package Type
TSSOP
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Signal Type
ECL/HSTL/LVDS/PECL
Mounting
Surface Mount
Pin Count
20
Mounting Style
SMD/SMT
Package / Case
TSSOP-20
Lead Free Status / RoHS Status
Compliant
Other names
PCKEP14PW,118
1. Description
2. Features
The PCKEP14 is a low skew 1-to-5 differential driver, designed with clock distribution
in mind, accepting two clock sources into an input multiplexer. The ECL/PECL input
signals can be either differential or single-ended (if the V
inputs can be used when the PCKEP14 is operating under PECL conditions.
The PCKEP14 specifically guarantees low output-to-output skew. Optimal design,
layout, and processing minimize skew within a device, and from device to device.
To ensure that the tight skew specification is realized, both sides of any differential
output need to be terminated identically into 50
being used. If an output pair is unused, both outputs may be left open (unterminated)
without affecting skew.
The common enable (EN) is synchronous, outputs are enabled/disabled in the LOW
state. This avoids a runt clock pulse when the device is enabled/disabled, as can
happen with an asynchronous control. The internal flip-flop is clocked on the falling
edge of the input clock, therefore, all associated specification limits are referenced to
the negative edge of the clock input.
The PCKEP14, as with most other ECL devices, can be operated from a positive V
supply in PECL mode. This allows the PCKEP14 to be used for high performance
clock distribution in +3.3 V or +2.5 V systems.
PCKEP14
2.5 V/3.3 V 1:5 differential ECL/PECL/HSTL clock driver
Rev. 01 — 30 October 2002
100 ps device-to-device skew
25 ps within device skew
400 ps typical propagation delay
Maximum frequency > 2 GHz (typical)
Contains temperature compensation
PECL and HSTL mode: V
NECL mode: V
LVDS input compatible
Open input default state.
CC
= 0 V with V
CC
= 2.375 V to 3.8 V with V
EE
= 2.375 V to 3.8 V
resistors, even if only one output is
BB
EE
output is used). HSTL
= 0 V
Product data
CC

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PCKEP14PW-T Summary of contents

Page 1

PCKEP14 2.5 V/3.3 V 1:5 differential ECL/PECL/HSTL clock driver Rev. 01 — 30 October 2002 1. Description The PCKEP14 is a low skew 1-to-5 differential driver, designed with clock distribution in mind, accepting two clock sources into an input multiplexer. ...

Page 2

Philips Semiconductors 3. Pinning information 3.1 Pinning Fig 1. SO20 pin configuration. 3.2 Pin description Table 1: Symbol Q0-Q4 Q0- CLK_SEL CLK0, CLK1 CLK0, CLK1 3.2.1 Power supply connection CAUTION 9397 750 09565 ...

Page 3

... Philips Semiconductors 4. Ordering information Table 2: Ordering information Type number Package Name PCKEP14D SO20 PCKEP14PW TSSOP20 5. Logic diagram Fig 3. Logic diagram. CAUTION 9397 750 09565 Product data 2.5 V/3.3 V 1:5 differential ECL/PECL/HSTL clock driver Description plastic small outline package 8 leads; body width 7.5 mm plastic thin shrink small outline package ...

Page 4

Philips Semiconductors 6. Function table Table 3: CLK0 [1] On next negative transition of CLK0 or CLK1. 7. Attributes Table 4: Characteristic internal input pull-down resistor internal input pull-up resistor ESD protection moisture sensitivity, indefinite ...

Page 5

Philips Semiconductors 8. Limiting values Table 5: Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter V PECL mode power supply CC V NECL mode power supply EE V PECL mode input voltage I NECL ...

Page 6

Philips Semiconductors Table 7: PECL DC characteristics [ 3 Symbol Parameter I power supply current EE V HIGH-level output OH voltage V LOW-level output OL voltage V HIGH-level input IH voltage ...

Page 7

Philips Semiconductors Table 8: NECL DC characteristics 3 2.375 Symbol Parameter Conditions I power supply EE current V HIGH-level output OH voltage V LOW-level output OL voltage V HIGH-level ...

Page 8

Philips Semiconductors 10. Dynamic characteristics Table 10: AC characteristics ( 2.375 Symbol Parameter Conditions f maximum toggle see max(PECL/ frequency HSTL propagation delay to ...

Page 9

Philips Semiconductors 11. Application information Fig 5. Typical termination for output driver and device evaluation. 9397 750 09565 Product data 2.5 V/3.3 V 1:5 differential ECL/PECL/HSTL clock driver Q DRIVER DEVICE 2 ...

Page 10

Philips Semiconductors 12. Package outline SO20: plastic small outline package; 20 leads; body width 7 pin 1 index 1 e DIMENSIONS (inch dimensions are derived from the original mm dimensions) A UNIT ...

Page 11

Philips Semiconductors TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4 pin 1 index 1 e DIMENSIONS (mm are the original dimensions) A UNIT max. 0.15 0.95 ...

Page 12

Philips Semiconductors 13. Soldering 13.1 Introduction to soldering surface mount packages This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our Data Handbook IC26; Integrated Circuit Packages ...

Page 13

Philips Semiconductors During placement and before soldering, the package must be fixed with a droplet of adhesive. The adhesive can be applied by screen printing, pin transfer or syringe dispensing. The package can be soldered after the adhesive is cured. ...

Page 14

Philips Semiconductors 15. Data sheet status [1] Level Data sheet status Product status I Objective data Development II Preliminary data Qualification III Product data Production [1] Please consult the most recently issued data sheet before initiating or completing a design. ...

Page 15

Philips Semiconductors Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . ...

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