PI90LVB024LX Pericom Semiconductor, PI90LVB024LX Datasheet

PI90LVB024LX

Manufacturer Part Number

PI90LVB024LX

Description

Manufacturer

Pericom Semiconductor

Datasheet

1.PI90LVB024LX.pdf (12 pages)

Specifications of PI90LVB024LX

Array Configuration

2x2

Differential Data Transmission

Yes

Power Supply Requirement

Single

Operating Supply Voltage (typ)

3.3V

Package Type

TSSOP

Pin Count

Mounting

Surface Mount

Operating Temperature (max)

85C

Operating Temperature (min)

-40C

Operating Temperature Classification

Industrial

Cascading Capability

On-chip Buffers

On-chip Decoder

On-chip Latch Circuit

On-chip Mux/demux

Yes

Programmable

Operating Supply Voltage (max)

3.6V

Operating Supply Voltage (min)

Dual Supply Voltage (typ)

Not RequiredV

Dual Supply Voltage (max)

Not RequiredV

Dual Supply Voltage (min)

Not RequiredV

Output Level

LVDS

Lead Free Status / RoHS Status

Not Compliant

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Features

• Dual 2x2 Crosspoint/Repeater Switch

• Meets or Exceeds the Requirements of ANSI TIA/

• Designed for Signaling Rates up to 650 Mbit/s (325 MHz)

• Operates from a 3.3V Supply: –40°C to 85°C

• Low Voltage Differential Signaling with Output Voltages

• Accepts ±350mV differential inputs

• Wide common mode input range: 0.2V to 2.7V

• Output drivers are high impedance when disabled or when

• Inputs are open, short, and terminated fail safe

• Propagation Delay Time: 3.5ns

• ESD protection is 10kV on bus pins

• Bus Pins are High Impedance when disabled or with

• TTL Inputs are 5V Tolerant

• Power Dissipation at 400Mbit/s of 250mW

• Packaging (Pb-free & Green Available):

Block Diagram

DE/4DE

EIA-644-1995

of ±350mV into:

– 100Ω load (PI90LV024)

– 50Ω load Bus LVDS Signaling (PI90LVB024)

– 28-pin QSOP (Q)

– 28-pin TSSOP (L)

less than 1.5V

≤ 1.5V

DE/

LVDS Dual 2x2 Crosspoint/Repeater Switch

Description

The PI90LV024 and PI90LVB024 are monolithic dual 2x2

asynchronous crosspoint/repeater switches. The crosspoint func-

tion is based on a multiplexer tree architecture. Each 2x2 switch

can be considered as a pair of 2:1 multiplexers that share the same

inputs. The signal path through each switch is fully differential

with minimal propagation delay. The signal path is unregistered,

so no clock is required for the data inputs. The signal line drivers

and receivers use Low Voltage Differential Signaling (LVDS) to

achieve signaling rates as high as 650 Mbps.

The LVDS standard provides a minimum differential output voltage

magnitude of 247mV into a 100Ω load and receipt of 100mV signals

with up to 1V of ground potential difference between a transmitter

and receiver. The PI90LVB024 doubles the output drive current to

achieve Bus LVDS signaling levels with a 50Ω load.

The intended application of these devices is for loop-through and

redundant channel switching for both point-to-point base-band

(PI90LV024) and multipoint (PI90LVB024) data transmissions

over controlled impedance media. The package pin assignments

enables easy routing for applications requiring signal feedback.

Pin Configuration

GND

PI90LV024, PI90LVB024

GND

PS8486B

08/19/04

Related parts for PI90LVB024LX

PI90LVB024LX Summary of contents

Page 1

Features • Dual 2x2 Crosspoint/Repeater Switch • Meets or Exceeds the Requirements of ANSI TIA/ EIA-644-1995 • Designed for Signaling Rates up to 650 Mbit/s (325 MHz) • Operates from a 3.3V Supply: –40°C to 85°C • Low Voltage Differential ...

Page 2

MUX Truth Table Input Note: 1. Setting nDE to 0 will set Ouput nY/nZ to High Impedance ...

Page 3

Absolute Maximum Ratings Over Operating Free-Air Temperature (2) Supply Voltage Range ............................................................................. Voltage Range (DE ).....................................................................–0 Input Voltage Range, .......................................... V Electrostatic Discharge and GND All Pins ...

Page 4

Figure 2. Common-Mode Input Voltage vs. Differential Voltage Receiver Electrical Characteristics Over Recommended Operating Conditions Symbol Parameter V Postive-going differential input voltage threshold ITH+ V Negative-going differential input voltage threshold ITH- I Input Current ( inputs ...

Page 5

Receiver / Driver Electrical Characteristics Over Recommended Operating Conditions (unless otherwise noted) Symbol Parameter V Differential Output Voltage Magnitude OD Change in Differential Output Voltage Mag- ∆V OD nitude between Logic States V Steady-State Common-Mode Output Voltage OC(SS) Change in ...

Page 6

Differential Receiver to Driver Switching Characteristics Over Recommended Operating Conditions (unless otherwise noted) Symbol t Differential propagation delay, low-to-high PLH t Differential propagation delay, high-to-low PHL t Pulse skew ( | t sk(p) PHL t Transistion, low-to-high r t Transition, ...

Page 7

Parameter Measurement Information �� Figure 3. Test Circuit and Voltage Definitions for the Differential Output Signal Notes: 1. All input pulses are supplied by a generator having the following characteristics: t pulse width = 10 ...

Page 8

Figure 5. Differential Receiver to Driver Propagation Delay and Driver Transition Time Waveforms Notes 100Ω or 50Ω ± All input pulses ...

Page 9

Notes 100Ω or 50Ω ± All input pulses are supplies by a generator having the following characteristics: pulse ...

Page 10

Typical Characteristics �� Figure 7 �� ...

Page 11

Packaging Mechanical: 28-Pin QSOP ( .386 9.804 .394 10.009 .033 REF 0.84 .025 .008 0.203 BSC .012 0.305 0.635 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Packaging Mechanical: 28-Pin TSSOP ( .378 .386 9.6 9.8 .002 .006 ...

Page 12

... PI90LV024LE PI90LVB024Q PI90LVB024QE PI90LVB024L PI90LVB024LE Notes: 1. Thermal Characteristics can be found on the company web site at www.pericom.com/packaging/ Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com LVDS Dual 2x2 Crosspoint/Repeater Switch Package Code Q 28-pin 150-mil SOIC Q Pb-free & Green, 28-pin 150-mil SOIC L 28-pin 170-mil TSSOP L Pb-free & ...

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