Datasheet PI3B3384L, PI3B3384Q, PI3B32384L, PI3B32384Q Datasheet (PERICOM)

Page 1

12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012

PI3B3384

234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901

PI3B32384 (25

3.3V, Hot Insertion

10-Bit, 2-Port, BusSwitch

ΩΩ

Ω)

ΩΩ

Product Features

 Near-zero propagation delay  Low noise, 25 Ohm version (PI3B32384)  5 Ohm switches connect inputs to outputs (PI3B3384)  Fast Switching Speed - 4.5ns max.  Permits Hot Insertion.  Ultra-low quiescent power (0.1µA typical)

 Ideally suited for notebook applications

 Package:

 24-pin 150-mil wide plastic QSOP (Q)  24-pin 173-mil wide plastic TSSOP (L)

Logic Block Diagram

Product Description

Pericom Semiconductors PI3B series of logic circuits are produced using the Companys advanced submicron CMOS technology, achieving industry leading performance.

The PI3B3384 and PI3B32384 are 3.3 Volt, 10-bit, 2-port bus switches designed with a low ON resistance allowing inputs to be connected directly to outputs. The bus switch creates no additional propagational delay or additional ground bounce noise. Switches are turned ON by the Bus Enable (BE) input signal. Two bus enable signals are provided, one for each of the upper and lower five bits of the two 10-bit buses. The PI3B32384 is designed with an internal 25 Ohm resistor reducing noise reflection in high-speed applications.

Product Pin Configuration

24-Pin

Q, L

Truth Table

(1)

Function BEA BEB B0-B4 B5-B9

Disconnect H H Hi-Z Hi-Z Connect L H A0-A4 Hi-Z Connect H L Hi-Z A5-A9 Connect L L A0-A4 A5-A9

Notes:

1. H = High Voltage Level X = Don’t Care L = Low Voltage Level Hi-Z =High Impedance

Product Pin Description

Pin Name Description

BEA, BEB Bus Enable Inputs (Active LOW) A0-A9 Bus A B0-A9 Bus B GND Ground V

Power

PS8161D 01/05/00

Page 2

3.3V, Hot Insertion, 10-Bit, 2-Port BusSwitch

12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012

Maximum Ratings

(Above which the useful life may be impaired. For user guidelines, not tested.)

Storage Temperature ............................................................... 65°C to +150°C

Ambient Temperature with Power Applied .............................. 40°C to +85°C

Supply Voltage to Ground Potential (Inputs & VCC Only) ........ 0.5V to +4.6V

Supply Voltage to Ground Potential (Outputs & D/O Only) ......0.5V to +4.6V

DC Input Voltage ....................................................................... 0.5V to +4.6V

DC Output Current ................................................................................. 120mA

Power Dissipation .................................................................................... 0.5W

PI3B3384/PI3B32384 (25

ΩΩ

Ω)

ΩΩ

Note:

Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.

DC Electrical Characteristics (Over the Operating Range, T

= –40°C to +85°C, VCC = 3.3V ±10%)

Parameters Description Test Conditions

V V I I I V R

IL IH IL OFF

Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 — — V Input LOW Voltage Guaranteed Logic LOW Level –0.5 — 0.8 V Input HIGH Current VCC = Max., VIN = VCC ——±1µA Input LOW Current VCC = Max., VIN = GND — — ±1 µA Off Current VCC = 0, V

= 3 TO 3.3V — — 10 µA

OUT

Clamp Diode Voltage VCC = Min., IIN = –18mA — –1.2 V Switch On Resistance

(3)

VCC = Min., VIN = 0.0V, PI3B3384 — 5 8 Ω ION = 48mA or 64mA

VCC = Min., VIN = 2.4V, PI3B3384 — 10 17 Ω ION = 15mA

Capacitance (T

Parameters

OFF

= 25°C, f = 1 MHz)

(4)

Description Test Conditions Typ. Units

Input Capacitance VIN = 0V 3.0 pF A/B Capacitance, Switch Off VIN = 0V 8.0 pF

A/B Capacitance, Switch On VIN = 0V 16.0 pF

(1)

Min. Typ

(2)

Max. Units

PI3B32384 18 28 40

PI3B32384 18 35 50

Notes:

1 . For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at VCC = 3.3V, TA = 25°C ambient and maximum loading.

3. Measured by the voltage drop between A and B pin at indicated current through the switch. ON resistance is determined by the lower of the voltages on the two (A,B) pins.

4. This parameter is determined by device characterization but is not production tested.

PS8161D 01/05/00

Page 3

12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012

Power Supply Characteristics

Parameters Description Test Conditions

PI3B3384/PI3B32384 (25

3.3V, Hot Insertion, 10-Bit, 2-Port BusSwitch

(1)

Min. Typ

(2)

Max. Units

ΩΩ

Ω)

ΩΩ

∆I

Quiescent Power VCC = Max., PI3B3384 — 0.1 3 µA Supply Current VIN = GND or V

Supply Current per VCC = Max., V

= 3.0V

(3)

PI3B32384

— — 750 µA

Input @ TTL HIGH

Notes:

1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.

2. Typical values are at VCC = 3.3V, +25°C ambient.

3. Per TTL driven input (control inputs only); A and B pins do not contribute to ICC.

PI3B3384 Switching Characteristics Over Operating Range

4833B3IP

sretemaraPnoitpircseDsnoitidnoC

HLP

LHP

HZP

LZP

ZHP

ZLP

( )3

.niM.xaM

)3,2(

yaleDnoitagaporP

xAotxB,xBotxA

emiTelbanEsuB

xBroxAotxEB

emiTelbasiDsuB

xBroxAotxEB

005= Ω

005= Ω 005= Ω

Fp05=

0.10.4

52.0

0.15.3

stinU.moC

Notes:

1. See test circuit and waveforms.

2. This parameter is guaranteed but not tested on Propagation Delays.

3. The bus switch contributes no propagational delay other than the RC delay of the ON resistance of the switch and the load capacitance. The time constant for the switch alone is of the order of 0.25ns for 50pF load. Since this time constant is much smaller than the rise/ fall times of typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when used in a system is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side.

PS8161D 01/05/00

Page 4

3.3V, Hot Insertion, 10-Bit, 2-Port BusSwitch

12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012

PI3B32384 Switching Characteristics over Operating Range

PI3B32384

Com.

Parameters Description Conditions

t t t t t t

PLH PHL PZH PZL PHZ PLZ

Propagation Delay Ax to Bx, Bx to Ax RL = 500Ω Bus Enable Time CL = 5 0p F, 1.0 4.0 ns BEX to Ax or Bx RL = 500Ω, Bus Disable Time RL = 500Ω 1.0 4.5 BEx to Ax or Bx

(2,3)

CL = 50pF 0.25

Notes:

1. See test circuit and waveforms.

2. This parameter is guaranteed but not tested on Propagation Delays.

3. The bus switch contributes no propagational delay other than the RC delay of the ON resistance of the switch and the load capacitance. The time constant for the switch alone is of the order of 0.25ns for 50pF load. Since this time constant is much smaller than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when used in a system is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side.

(1)

Min. Max. Units

PI3B3384/PI3B32384 (25

ΩΩ

Ω)

ΩΩ

Ordering Information

traPegakcaPniPerutarepmeT

Q4833B3IP)Q(POSQ-42C°58+otC°04

Q48323B3IP)Q(POSQ-42C°58+otC°04

L4833B3IP)L(POSST-42C°58+otC°04

L48323B3IP)L(POSST-42C°58+otC°04

Pericom Semiconductor Corporation

2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com

PS8161D 01/05/00