PERIC PI2BV3867L, PI2BV3867Q Datasheet

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PI2BV3867

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2.5V, 10-Bit, 2-Port 266 MHz DDR BusSwitch

ProductFeatures

ProductDescription

Used in x8 DDR Memory Module

Near zero propagation delay

20 Ohm switches connect inputs to outputs

Fast Switching Speed –3ns (max.)

Low Off Capacitance (3pF)

Pull-down on B output

Pull-up on Switch Enable

Packages available:

24-pin 150 mil wide plastic QSOP (Q)

24-pin 173 mil wide plastic TSSOP (L)

Pericom Semiconductor’s PI2B series of logic circuits are produced using the Company’s advanced submicron CMOS technology, achieving industry leading performance.

The PI2BV3867 is a 10-bit, 2.5 volt two-port bus switch 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. The switches are turned ON by the Bus Enable (BE) input signal.

The PI2BV3867 switch is intended for 266 MHz DDR(x8) Memory Module Applications.

Logic Block Diagram

 

 

 

 

 

 

ProductPinConfiguration

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NC

 

 

 

 

 

Vcc

 

A0

 

 

 

 

B0

 

 

1

 

24

 

 

 

 

 

 

 

A0

 

2

 

23

 

B0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A1

 

3

 

22

 

B1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A2

 

4

24-Pin

21

 

B2

 

A9

 

 

 

 

B9

 

A3

 

5

20

 

B3

 

 

 

 

 

 

 

Q, L

 

 

 

 

 

 

 

A4

 

6

19

 

B4

 

 

 

 

 

 

 

 

 

 

VCC

 

 

 

 

 

 

A5

 

7

 

18

 

B5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A6

 

8

 

17

 

B6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A7

 

9

 

16

 

B7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A8

 

10

 

15

 

B8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A9

 

11

 

14

 

B9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

12

 

13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ProductPinDescription

PinName

Description

 

 

 

 

 

 

Bus Enable Input (Active LOW)

 

BE

 

A0–9

Bus A

 

 

 

 

B0–9

Bus B

 

 

 

 

GND

Ground

 

 

 

 

VCC

Power

 

 

 

 

TruthTable(1)

Function

 

BE

 

A0–A9

 

 

 

 

 

Disconnect

 

H

Hi-Z

 

 

 

 

 

Connect

 

L

B0–9

Notes:

H = High Voltage Level

L = Low Voltage Level

Hi-Z = High Impedance

1

PS8471A

05/02/00

 

PI2BV3867

 

2.5V, 10-Bit, 2-Port

 

266 MHz DDR BusSwitch

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MaximumRatings

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

...........................................................Storage Temperature

–65°Cto+150°C

Ambient Temperature with Power Applied ..........................

–40°Cto+85°C

Supply Voltage to Ground Potential (Inputs & VCC Only) .....

–0.5Vto+4.6V

Supply Voltage to Ground Potential (Outputs & D/O Only)

.. –0.5Vto+4.6V

DC Input Voltage ....................................................................

–0.5Vto+4.6V

DC Output Current .............................................................................

120mA

Power Dissipation ................................................................................

0.5W

 

 

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, TA = 0°C to +85°C, V CC = 2.3V to 2.7V)

Parameters

Description

 

TestConditions(1)

Min.

 

Typ.(2)

Max.

Units

 

 

 

 

 

 

 

 

 

 

 

 

 

VIH

InputHIGHVoltage

(BE)

 

 

GuaranteedLogicHIGHLevel

1.6

 

 

 

 

VCC+0.3

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VIL

Input LOW Voltage (BE)

 

Guaranteed Logic LOW Level

–0.3

 

 

 

 

0.9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IOZH

High Impedance Output Current

 

B@2.5V

 

 

 

 

 

 

250

µA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VIK

Clamp Diode Voltage

 

VCC = Min., IIN = –18mA

 

 

 

 

 

 

–1.2

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RON

Switch On Resistance(4)

 

VCC = Min., VIN = 0.9V, ION = 20mA

 

 

 

17

 

33

 

Ω

 

 

 

 

 

 

 

 

VCC = Min., VIN = 1.6V, ION = 15mA

 

 

 

22

 

30

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RPU

Pull-up Resistance

 

 

 

115

 

150

 

200

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Capacitance(TA = 25°C, f = 1 MHz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parameters(4)

Description

 

Test Conditions

 

 

Typ.

 

Units

 

 

CIN

 

Input Capacitance

 

VIN = 0V

 

 

3

 

 

 

 

 

COFF

 

A Capacitance, Switch Off

 

VIN = 0V

 

 

3

 

 

pF

 

 

CON (A/B)

 

A/B Capacitance, Switch On

 

VIN = 0V

 

 

7

 

 

 

 

 

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 = 2.5V, 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.

Power Supply Characteristics

Parameters

Description

Test Conditions(1)

Min.

Typ.(2)

Max.

Units

ICC

Quiescent Power

VCC = Max.

VIN = VCC

 

10

µA

 

Supply Current

 

VIN = GND

 

28

mA

Notes:

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

2.Typical values are at VCC = 2.5V, +25°C ambient.

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

2

PS8471A

05/02/00

 

 

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