PI90LVB044L Pericom Semiconductor, PI90LVB044L Datasheet

PI90LVB044L

Manufacturer Part Number

PI90LVB044L

Description

Manufacturer

Pericom Semiconductor

Datasheet

1.PI90LVB044L.pdf (11 pages)

Specifications of PI90LVB044L

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

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

 Designed for Signaling Rates up to 650 Mbit/s (325Mhz)

 Operates from a single 3.3V Supply: –40°C to 85°C

 Low-Voltage Differential Signaling with Output Voltages of

 Accepts ±350mV differential inputs

 Wide common mode input range: 0.2V to 2.7V

 Output drivers are high impedance when disabled or

 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

 TTL Inputs are 5V Tolerant

 Power Dissipation at 400 Mbit/s of 250mW

 Packaging (Pb-free & Green available):

Block Diagram

ANSI TIA/EIA-644-1995

±350mV into:

- 100Ω load (PI90LV044)

- 50Ω load Bus LVDS Signaling (PI90LVB044)

when V

with V

- 28-pin TSSOP (L)

S0,S1

1A/1B

2A/2B

3A/3B

4A/4B

S2/S3

09-0003

less than 1.5V

 1.5V

1DE/2DE

1Y/1Z

2Y/2Z

3Y/3Z

4Y/4Z

3DE/4DE

LVDS Dual 2x2 Crosspoint/Repeater Switch

Pin Conﬁ guration

Description

The PI90LV044 and PI90LVB044 are monolithic dual 2x2 asyn-

chro nous crosspoint/repeater switches. The crosspoint function

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 prop a ga tion 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 650Mbps.

The LVDS standard provides a minimum differential output volt-

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

mV signals with up to 1V of ground potential difference between a

transmitter and receiver. The PI90LVB044 doubles the output drive

current to achieve LVDS levels with a 50 ohm load.

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

redundant channel switching for both point-to-point baseband

(PI90LV044) and multipoint (PI90LVB044) data transmissions

over controlled impedance media.

1DE

3DE

PI90LV044, PI90LVB044

2DE

GND

4DE

GND

PS8485G

10/16/09

Related parts for PI90LVB044L

PI90LVB044L 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 (325Mhz)  Operates from a single 3.3V Supply: –40°C to 85°C  Low-Voltage Differential Signaling with ...

Page 2

MUX Truth Table Input S3 Note: 1. Setting nDE to 0 will set Ouput nY/nZ to High Impedance. S1/S0 1A/1B 2A/2B S3/S2 3A/3B 4A/4B S1/S0 1A/1B 2A/2B S3/S2 3A/3B 4A/4B 09-0003 LVDS Dual ...

Page 3

Absolute Maximum Ratings Over Operating Free-Air Temperature (1) ....................................................................... Supply Voltage Range Voltage Range (DE, S0, S1) ...............................................................–0 Input Voltage Range ..................................... –0. Electrostatic Discharge ...

Page 4

Figure 2. Common-Mode Input Voltage vs. Differential Voltage Receiver Electrical Characteristics Over Recommended Operating Conditions Symbol Parameter V Positive 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 Symbol Parameter V Differential Output voltage magnitude OD Change in differential Output voltage magnitude ∆V OD between logic states V Steady-state common-mode output voltage OC(SS) Change in steady-state common-mode output ∆V OC(SS) voltage ...

Page 6

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

Page 7

Parameter Measurement Information Pulse Generator V I(B) V I(A) Notes: A. All input pulses are supplied by a generator having the following characteristics ≤ 1ns, pulse repetition rate (PRR Mpps, pulse width = ...

Page 8

Pulse Generator PLH – Notes All input pulses are supplies by a generator having the following characteristics: pulse repetition rate (PPR Mpps, ...

Page 9

1 PZH PZL 100 Ω Ω ±1% Notes: B. All input pulses are ...

Page 10

Typical Characteristics PI90LV044 HIGH-LEVEL OUTPUT VOLTAGE HIGH-LEVEL OUTPUT CURRENT 3 3 25°C 3 2 –4 –3 – – High-Level Output Current – mA Figure 7 PI90LVB044 ...

Page 11

... For latest package info, please check: http://www.pericom.com/products/packaging/mechanicals.php Ordering Information Ordering Code PI90LV044LE PI90LVB044LE Notes: • Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ • Pb-free and Green • Adding X sufﬁ Tape/Reel Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com ...

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