IDTMPC9448FA IDT, Integrated Device Technology Inc, IDTMPC9448FA Datasheet

IDTMPC9448FA

Manufacturer Part Number

IDTMPC9448FA

Description

Manufacturer

IDT, Integrated Device Technology Inc

Type

Clock Driverr

Datasheet

1.IDTMPC9448FA.pdf (12 pages)

Specifications of IDTMPC9448FA

Number Of Clock Inputs

Output Frequency

350MHz

Output Logic Level

LVCMOS

Operating Supply Voltage (min)

2.375V

Operating Supply Voltage (typ)

2.5/3.3V

Operating Supply Voltage (max)

3.465V

Package Type

TQFP

Operating Temp Range

-40C to 85C

Operating Temperature Classification

Industrial

Signal Type

LVCMOS/LVPECL

Mounting

Surface Mount

Pin Count

Quiescent Current

2mA

Lead Free Status / RoHS Status

Not Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

IDTMPC9448FA

Manufacturer:

IDT

Quantity:

7 209

Current page: 1 of 12
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IDT™ 3.3 V/2.5 V LVCMOS 1:12 Clock Fanout Buffer

Freescale Timing Solutions Organization has been acquired by Integrated Device Technology, Inc

3.3 V/2.5 V LVCMOS 1:12 Clock

Fanout Buffer

IDT™ / ICS™ LVCMOS 1:12 CLOCK FANOUT BUFFER

3.3 V/2.5 V LVCMOS 1:12 Clock

Fanout Buffer

1:12 clock fanout buffer targeted for high performance clock tree applications.

With output frequencies up to 350 MHz and output skews less than 150 ps, the

device meets the needs of most demanding clock applications.

Features

•

Functional Description

output provides a precise copy of the input signal with a near zero skew. The outputs buffers support driving of 50 Ω terminated

transmission lines on the incident edge. Each output is capable of driving either one parallel terminated or two series terminated

transmission lines.

tion systems. The MPC9448 CLK_STOP control is synchronous to the falling edge of the input clock. It allows the start and stop

of the output clock signal only in a logic low state, thus eliminating potential output runt pulses. Applying the OE control will force

the outputs into high-impedance mode.

a 2.5 V or 3.3 V power supply and an ambient temperature range of -40°C to +85°C. The MPC9448 is pin and function compatible

but performance-enhanced to the MPC948.

The Freescale Semiconductor, Inc. MPC9448 is a 3.3 V or 2.5 V compatible,

The MPC9448 is specifically designed to distribute LVCMOS compatible clock signals up to a frequency of 350 MHz. Each

Two selectable, independent clock inputs are available, providing support of LVCMOS and differential LVPECL clock distribu-

All inputs have an internal pull-up or pull-down resistor preventing unused and open inputs from floating. The device supports

32-lead Pb-free package available

applications

Pin and function compatible to MPC948

12 LVCMOS compatible clock outputs

Selectable LVCMOS and differential LVPECL compatible clock inputs

Maximum clock frequency of 350 MHz

Maximum clock skew of 150 ps

Synchronous output stop in logic low state eliminates output runt pulses

High-impedance output control

3.3 V or 2.5 V power supply

Drives up to 24 series terminated clock lines

Ambient temperature range -40°C to +85°C

32-Lead LQFP packaging

Supports clock distribution in networking, telecommunication and computing

CLOCK FANOUT BUFFER

3.3 V/2.5 V LVCMOS 1:12

32-LEAD LQFP PACKAGE

Pb-FREE PACKAGE

LOW VOLTAGE

CASE 873A-03

MPC9448

FA SUFFIX

AC SUFFIX

DATA SHEET

REV 5 JULY 11, 2006

MPC9448

Related parts for IDTMPC9448FA

IDTMPC9448FA Summary of contents

Page 1

V/2.5 V LVCMOS 1:12 Clock 3.3 V/2.5 V LVCMOS 1:12 Clock Fanout Buffer Fanout Buffer The Freescale Semiconductor, Inc. MPC9448 2.5 V compatible, 1:12 clock fanout buffer targeted for high performance clock tree applications. ...

Page 2

MPC9448 3.3 V/2.5 V LVCMOS 1:12 Clock Fanout Buffer MPC9448 3.3V/2.5V LVCMOS 1:12 CLOCK FANOUT BUFFER V CC PCLK 0 PCLK CCLK CLK_SEL V CC CLK_STOP SYNC V CC (All input resistors have a value of 25 ...

Page 3

MPC9448 3.3 V/2.5 V LVCMOS 1:12 Clock Fanout Buffer MPC9448 3.3V/2.5V LVCMOS 1:12 CLOCK FANOUT BUFFER Table 3. Absolute Maximum Ratings Symbol Characteristics V Supply Voltage Input Voltage Output Voltage OUT I DC Input ...

Page 4

MPC9448 3.3 V/2.5 V LVCMOS 1:12 Clock Fanout Buffer MPC9448 3.3V/2.5V LVCMOS 1:12 CLOCK FANOUT BUFFER Table 6. AC Characteristics (V CC Symbol Characteristics f Input Frequency ref f Maximum Output Frequency MAX V Peak-to-Peak Input Voltage PP (2) V ...

Page 5

MPC9448 3.3 V/2.5 V LVCMOS 1:12 Clock Fanout Buffer MPC9448 3.3V/2.5V LVCMOS 1:12 CLOCK FANOUT BUFFER Table 8. AC Characteristics (V CC Symbol Characteristics f Input Frequency ref f Maximum Output Frequency MAX V Peak-to-peak input voltage PP (2) V ...

Page 6

MPC9448 3.3 V/2.5 V LVCMOS 1:12 Clock Fanout Buffer MPC9448 3.3V/2.5V LVCMOS 1:12 CLOCK FANOUT BUFFER CCLK or PCLK CLK_STOP Q0 to Q11 Figure 3. Output Clock Stop (CLK_STOP) Timing Diagram Driving Transmission Lines The MPC9448 clock driver was designed ...

Page 7

MPC9448 3.3 V/2.5 V LVCMOS 1:12 Clock Fanout Buffer MPC9448 3.3V/2.5V LVCMOS 1:12 CLOCK FANOUT BUFFER Since this step is well above the threshold region, it will not cause any false clock triggering; however, designers may be uncomfortable with unwanted ...

Page 8

MPC9448 3.3 V/2.5 V LVCMOS 1:12 Clock Fanout Buffer MPC9448 3.3V/2.5V LVCMOS 1:12 CLOCK FANOUT BUFFER T should be selected according to the MTBF system J,MAX requirements, and Figure 9 R can be derived from thja Figure 10. The R ...

Page 9

MPC9448 3.3 V/2.5 V LVCMOS 1:12 Clock Fanout Buffer MPC9448 3.3V/2.5V LVCMOS 1:12 CLOCK FANOUT BUFFER The Following Figures Illustrate the Measurement Reference for the MPC9448 Clock Driver Circuit Pulse Generator Ω Figure 11. CCLK MPC9448 AC ...

Page 10

MPC9448 3.3 V/2.5 V LVCMOS 1:12 Clock Fanout Buffer MPC9448 3.3V/2.5V LVCMOS 1:12 CLOCK FANOUT BUFFER PCLK V PP PCLK P(LH) Figure 13. Propagation Delay (t t SK(LH) The pin-to-pin skew is defined as the worst case ...

Page 11

MPC9448 3.3 V/2.5 V LVCMOS 1:12 Clock Fanout Buffer MPC9448 3.3V/2.5V LVCMOS 1:12 CLOCK FANOUT BUFFER D1/2 PIN 1 INDEX E1 D/2 4X 0. 28X SEATING PLANE ...

Page 12

MPC92459 MPC9448 PART NUMBERS 900 MHz Low Voltage LVDS Clock Synthesizer 3.3 V/2.5 V LVCMOS 1:12 Clock Fanout Buffer INSERT PRODUCT NAME AND DOCUMENT TITLE Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: ...

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