Datasheet PI90LVB044L, PI90LVB044Q, PI90LV044L, PI90LV044Q Datasheet (PERICOM)

PI90LV044, PI90LVB044

LVDS Dual 2x2 Crosspoint/Repeater Switch

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 Output Voltages of

±350mV into:

- 100 Ohm load (PI90LV044)

- 50 Ohm load Bus LVDS Signaling (PI90LVB044)

• Accepts ±350mV differential inputs

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

• Output drivers are high impedance when disabled or

when VCC ≤ 1.5V

• 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 VCC less than 1.5V

• TTL Inputs are 5V Tolerant

Description

The PI90LV044 and PI90LVB044 are monolithic dual 2x2 asynchro­nous 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
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 650Mbps.

The LVDS standard provides a minimum differential output voltage
magnitude of 247 mV into a 100 ohm 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.

• Power Dissipation at 400 Mbit/s of 250mW

• Available Packaging: 28-pin QSOP and 28-pin TSSOP

Block Diagram Pin Configuration

S0,S1

1A/1B

2A/2B

3A/3B

4A/4B

S2/S3

1DE/2DE

1Y/1Z

2Y/2Z

3Y/3Z

4Y/4Z

3DE/4DE

1B
1A
S0

1DE

S1
2A
2B
3A
3B
S2

3DE

S3
4A
4B

1
2
3
4
5
6
7
8
9
10
11
12
13
14

28-Pin

L, Q

28
27
26
25
24
23
22
21
20
19
18
17
16
15

V

CC

1Y
1Z
2DE
2Z
2Y
GND
V

CC

3Y
3Z
4DE
4Y
4Z
GND

1

PS8485A 03/27/01

Table 1. MUX Truth Table

tupnItuptuO

1S,3S0S,2SZ3/Y3-Z1/Y1Z4/Y4-Z2/Y2

00 B3/A3-B1/A1B3/A3-B1/A1rettilpS
01 B4/A4-B2/A2B4/A4-B2/A2rettilpS
10 B3/A3-B1/A1B4/A4-B2/A2retuoR
11 B4/A4-B2/A2B3/A3-B1/A1retuoR

Note: Setting nDE to 0 will set Ouput nY/nZ to High Impedance.

PI90LV044, PI90LVB044

LVDS Dual 2x2 Crosspoint/Repeater Switch

noitcnuF

S1/S0

1A/1B

2A/2B

S3/S2

3A/3B

4A/4B

S1/S0

1A/1B

Router Options

1DE/2DE

1Y/1Z

2Y/2Z

3DE/4DE

3Y/3Z

4Y/4Z

1DE/2DE

1Y/1Z

Cross Point
Router

Pass Through
Router

Splitter A

2A/2B

S3/S2

3A/3B

4A/4B

2Y/2Z

3DE/4DE

3Y/3Z

4Y/4Z

Splitter Options

Figure 1. Possible Signal Routing

Splitter B

2

PS8485A 03/27/01

PI90LV044, PI90LVB044

LVDS Dual 2x2 Crosspoint/Repeater Switch

Absolute Maximum Ratings Over Operating Free-Air Temperature

Supply Voltage Range, V

(1)

.................................................................................. –0.5V to 4V

CC

†

Voltage Range (DE, S0, S1) ......................................................................... –0.5 to 6V

Input Voltage Range, VI (A or B) ................................................. –0.5V to VCC + 0.5V

(2)

Electrostatic Discharge: A, B, Y, Z, and GND

........................

Class 3, A: 16kV, B:600V

All Pins ................................................ Class 3, A: 7kV, B:500V

Storage Temperature Range ................................................................ –65°C to 150°C

Lead Temperature 1, 6 mm (1/16 inch) from case for 10 seconds ........................ 260°C

† Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent
damage to the device. These are stress ratings only, and functional operation of the device
at these or any other conditions beyond those indicated under "Recommended Operating
Conditions" is not implied. Exposure to Absolute-Maximum-Rated conditions for ex­tended periods may affect device reliability.

Notes:

1. All voltage values, except differential I/O bus voltages, are with respect to ground terminal.

2. Tested in accordance with MIL-STD-883C Method 3015.7

Recommended Operating Conditions

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V

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04– 58C°

2.4 –

3

PS8485A 03/27/01

2.5

PI90LV044, PI90LVB044

LVDS Dual 2x2 Crosspoint/Repeater Switch

MAX at VCC > 3.15V

2

1.5

1

– Common-Mode Input Voltage – V

0.5

IC

V

0

0.1 0.2 0.3 0.4 0.5 0.6

MAX at VCC = 3V

MIN

VID – Differential Input Voltage – V

Figure 2. Common-Mode Input Voltage vs. Differential Voltage

Receiver Electrical Characteristics Over Recommended Operating Conditions (unless otherwise noted)

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02

PS8485A 03/27/01

Vm

µA

PI90LV044, PI90LVB044

LVDS Dual 2x2 Crosspoint/Repeater Switch

Receiver/Driver Electrical Characteristics Over Recommended Operating Conditions (unless otherwise noted)

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V

∆V

V

V

∆V

DO

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Vm

05– 05

05– 305

Vm

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R

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CC

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R

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ED

I

LI

I

SO

tnerructupnilevel-woL

4S,3S,2S,1S01Aµ

V

V

YO

V

DO

V8.0=

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Vro

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V

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02– An

01–
01–

Am

01–
01–

I

ZO

I

)FFO(O

C

NI

ecnaticapactupnIED4-ED1,3S-0S

tnerructuptuoecnedepmI-hgiH

tnerructuptuoffo-rewoPV

Note:

1. All typical values are at 25°C and with a 3.3 supply

V

DO

V

O

CC

Vm006=5.152±

VroV0=

CC

V,V0=

O

V6.3=5.104±

5.152±

An

3Fp
8Fp

5

PS8485A 03/27/01

PI90LV044, PI90LVB044

LVDS Dual 2x2 Crosspoint/Repeater Switch

Differential Receiver to Driver Switching Characteristics Over Recommended Operating Conditions

(unless otherwise noted)

lobmySretemaraPnoitidnoCtseT.niM.pyT

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t

HLP

t

LHP

t

)p(ks

t

r

(weksesluP I t

t-

LHP

I )5.0 –

HLP

hgihot-wol,noitisnarT

hgih-ot-wol,yalednoitagaporplaitnereffiD

0.40.6

wol-ot-hgih,yalednoitagaporplaitnereffiD 0.40.6

440VL09IP0.15.1

C

L

Fp01=

440BVL09IP8.03.1

440VL09IP0.15.1

t

f

t

ZHP

t

ZLP

t

HZP

t

LZP

t

LHP

t

HLP

t

LHP

xD_1R_

xD_1R_ 59

xD_2R_ 59

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3.401

0.301

0.201

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Notes:

1. All typical values are at 25°C and with a 3.3 supply

2. These parametric values are measured over supply voltage and temperature ranges recommended for the device

6

PS8485A 03/27/01

Parameter Measurement Information

A

Pulse

Generator

B

LVDS Dual 2x2 Crosspoint/Repeater Switch

DE

Y

RD

Input

(see Note A)

Z

V

OD

CL = 10 pF
(2 Places)
(see Note C)

PI90LV044, PI90LVB044

RL (see Note B)

V

I(B)

V

I(A)

Notes: A. All input pulses are supplied by a generator having the following characteristics: tr or tf ≤ 1ns, pulse repetition rate (PRR) - 50 Mpps,

pulse width = 10 ±0.2ns.

B. R

= 100Ω or 50Ω ±1%.

L

C. C

includes instrumentation and fixture capacitance within 6mm of the D.U.T.

L

D. The measurement of V

1.4 V

1 V

is made on test equipment with a –3dB bandwidth of at least 300 MHz.

OC(PP)

V

OD

0

t

f

t

r

100%
80%

20%
0%

Figure 3. Test Circuit and Voltage Definitions for the Differential Output Signal

Pulse

Generator

DE

A

RD

B

Input

(see Note A)

Y

Z

RL (see Note B)

(2 Places)

CL = 10 pF
(2 Places)
(see Note C)

V

I(B)

V

I(A)

V

V

OC

V

CC

OC(PP)

(see Note D)

1.4 V

1 V

V

OC(SS)

Notes: A. All input pulses are supplied by a generator having the following characteristics: tr or tf ≤ 1ns, pulse repetition rate (PRR) - 50 Mpps,

pulse width = 10 ±0.2ns.

= 100Ω or 50Ω ±1%.

B. R

L

includes instrumentation and fixture capacitance within 6mm of the D.U.T.

C. C

L

D. The measurement of V

is made on test equipment with a –3dB bandwidth of at least 300 MHz.

OC(PP)

Figure 4. Test Circuit and Definitions for the Driver Common-Mode Output Voltage

7

PS8485A 03/27/01

DE

PI90LV044, PI90LVB044

LVDS Dual 2x2 Crosspoint/Repeater Switch

Pulse

Generator

V

V

VOY – V

V

V

OZ

OY

OZ

A

RD

B

IB

0-V Differential

IA

t

PLH

0-V Differential

Y

Z

t

1.2-V CM

r

10 pF

t

PHL

1.2-V CM

10 pF

80%
0-V Differential
20%

t

f

RL (see Note A)

1.4 V

1 V

1.4 V

1 V

Notes: A. R

= 100Ω or 50Ω ±1%

L

B. All input pulses are supplies by a generator having the following characteristics:

pulse repetition rate (PPR) = 50 Mpps, pulse width = 10 ±0.2ns.

Figure 5. Differential Receiver to Driver Propagation Delay and Driver Transition Time Waveforms

8

PS8485A 03/27/01

PI90LV044, PI90LVB044

LVDS Dual 2x2 Crosspoint/Repeater Switch

1 V or 1.4 V

1.2 V

DE

t

PZH

VOY or V

VOY or V

Notes: A. RL = 100 Ω or 50 Ω ±1%

OZ

t

PZL

OZ

B. All input pulses are supplied by a generator having the following characteristics: pulse repetition rate (PRR) = 0.5 Mpps,

pulse width = 500 ± 10 ns.

DE

A

RD

B

RL/2

Y

Z

t

PHZ

t

PLZ

(see Note A)

1.2 V

RL/2
(see Note A)

2 V

1.4 V

0.8 V

≈1.4 V

1.25 V

1.2 V

1.2 V

1.15 V

≈1 V

Figure 6. Enable and Disable Timing Circuit

9

PS8485A 03/27/01

Typical Characteristics

PI90LV044, PI90LVB044

LVDS Dual 2x2 Crosspoint/Repeater Switch

– High-Level Ouptut Voltage – V

V

OH

3.5

3

2.5

2

1.5

1

.5

0

PI90LV044

HIGH-LEVEL OUTPUT VOLTAGE

vs

HIGH-LEVEL OUTPUT CURRENT

VCC = 3.3 V
TA = 25°C

–4

IOH – High-Level Output Current – mA

–2 –1

Figure 7

PI90LV044

LOW-LEVEL OUTPUT VOLTAGE

vs

LOW-LEVEL OUTPUT CURRENT

4

VCC = 3.3 V
TA = 25°C

3

2

– Low-Level Output Voltage – V

1

OL

V

0–3

0

IOL – Low-Level Output Current – mA

40

62

Figure 8

– High-Level Output Voltage – V

V

OH

3.5

3

2.5

2

1.5

1

.5

0

PI90LVB044 PI90LVB044

HIGH-LEVEL OUTPUT VOLTAGE

vs

HIGH-LEVEL OUTPUT CURRENT

VCC = 3.3 V
TA = 25°C

–8

IOH – High-Level Output Current – mA

–4 –2

Figure 9

LOW-LEVEL OUTPUT VOLTAGE

vs

LOW-LEVEL OUTPUT CURRENT

4

VCC = 3.3 V
TA = 25°C

3

2

1

– Low-Level Output Voltage – V

OL

V

0–6

0

IOL – Low-Level Output Current – mA

6102

80

124

Figure 10

10

PS8485A 03/27/01

Packaging Mechanical: 28-Pin QSOP

28

0.150

0.157

3.81

3.99

PI90LV044, PI90LVB044

LVDS Dual 2x2 Crosspoint/Repeater Switch

.015 x 45˚

1

9.804

.386
.394

10.009

.033

REF

0.84

.025
BSC

0.635

X.XX

DENOTES DIMENSIONS

X.XX

IN MILLIMETERS

.008
.012

0.203

0.305

1.35

1.75

.004
.010

.053
.069

0.101

0.254

Packaging Mechanical: 28-Pin TSSOP

28

.169

4.3

.177

4.5

SEATING
PLANE

0.41

1.27

.228
.244

5.79

6.19

.016
.050

.007
.010

0.178

0.254

1

X.XX
X.XX

.0256

BSC

.378
.386

9.6

9.8

.007

0.65

DENOTES CONTROLLING
DIMENSIONS IN MILLIMETERS

.012

0.19

0.30

.002
.006

.047

1.20
Max

0.05

0.15

SEATING
PLANE

0.45

0.75

11

.252
BSC

6.4

.018
.030

.004
.008

0.09

0.20

PS8485A 03/27/01

Ordering Information

edoCgniredrOemaNegakcaPepyTegakcaPegnaRgnitarepO

Q440VL09IP82QPOSQlim-051nip-82

L440VL09IP82LPOSSTlim-071nip-82

Q440BVL09IP82QPOSQlim-051nip-82

L440BVL09IP82LPOSSTlim-071nip-82

PI90LV044, PI90LVB044

LVDS Dual 2x2 Crosspoint/Repeater Switch

C°58otC°04–

Pericom Semiconductor Corporation

2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax [phone] • http://www.pericom.com

12

PS8485A 03/27/01