Datasheet PI3B16211 Datasheet (PERICOM)

Page 1

12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012

PI3B16211

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34

33 25 26 27 28

3.3V, Hot Insertion, 24-Bit BusSwitch

Product Features

• Near-zero propagation delay

•5Ω switches connect inputs to outputs

• Fast Switching Speed - 4.5ns max.

• Permits Hot Insertion

•VCC operating range: 3.0V to 3.6V

Product Description

Pericom Semiconductor’s PI3B series of logic circuits are produced using the Company’s advanced 0.35 micron CMOS technology.

The PI3B16211 is a 3.3 volt, hot insertion, 24-bit bus switch designed with a low ON resistance allowing inputs to be connected directly to outputs. This device operates as a 24-bit or a as 12-bit bus switch that provides high-speed bus switching.

• Industrial operating temperature: –40°C to +85°C

• Packages available: – 56-pin 240-mil wide thin plastic TSSOP (A) – 56-pin 300-mil wide plastic SSOP (V)

Logic Block Diagram

Truth Table

EO1EO2sO/IB1,A1sO/IB2,A2

LL B1=A1B2=A2

LH B1=A1Z HLZ B2=A2 HHZ Z

Note:

1. H = High Voltage Level L = Low Voltage Level Z = High Impedance

Product Pin Configuration

1A1 1A2 1A3 1A4 1A5 1A6

GND

1A7 1A8

1A9 1A10 1A11 1A12

2A1

2A2

56-PIN

A, V

VCC

2A3

GND

2A4

2A5

2A6

2A7

2A8

2A9 2A10 2A11 2A12

Product Pin Description

Pin Name I/O Description

1OE, 2OE I Select Inputs xAx I/O Bus A xBx I/O Bus B

1OE 2OE 1B1 1B2 1B3 1B4 1B5

GND

1B6 1B7 1B8 1B9 1B10 1B11 1B12 2B1 2B2 2B3

GND

2B4 2B5 2B6 2B7 2B8 2B9 2B10 2B11 2B12

PS8176B 11/09/98

Page 2

3.3V, Hot Insertion, 24-Bit BusSwitch

1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012

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 ......................–0°C to +85°C

Supply Voltage Range......................................................–0.5V to +4.6V

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

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

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 = –40°C to +85°C, VCC = 3.0V to 3.6V

Parameters Description Test Conditions

VIH Input HIGH Voltage G

uaranteed Logic HIGH Level

(1)

Min. Typ

2.0 V

PI3B16211

(2)

Max. Units

VIL Input LOW Voltage

Guaranteed Logic LOW Level

–0.5 0.8 V IIH Input HIGH Current VCC = Max., VIN = VCC ±1 µA IIL Input LOW Current VCC = Max., VIN = GND ±1 µA IOZH High Impedance Output Current 0≤ A, B ≤ VCC ±1 µA VIK Clamp Diode Voltage VCC = Min., IIN = –18mA -0.7 -1.2 V RON Switch On Resistance

(3)

VCC = Min., VIN = 0.0V, ION = 48mA or 64mA

58Ω

VCC = Min., VIN = 2.4V, ION = 15 mA 10 15

Capacitance (TA = 25°C, f = 1 MHz)

Parameters

CIN Input Capacitance VIN = 0V 3.0 pF COFF A/B Capacitance, Switch Off VIN = 0V 8.5 pF

CON A/B Capacitance, Switch On VIN = 0V 17.0 pF

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.

(4)

Description Test Conditions Typ Units

PS8176B 11/09/98

Page 3

PI3B16211

3.3V, Hot Insertion, 24-Bit BusSwitch

Power Supply Characteristics

Parameters Description Test Conditions

(1)

Min. Typ

ICC Quiescent Power VCC = Max. VIN = GND or VCC 10 µA

Supply Current

∆ICC Supply Current per VCC = Max. VIN = 3.0V

(3)

Input @ TTL HIGH

(2)

Max. Units

750 µA

ICCD Supply Current per VCC = Max. 0.25 mA/

Input per MHz

(4)

A and B Pins Open MHz Control Input Toggling 50% Duty Cycle

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.

4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified frequency. The A and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design.

RL = 500Ω, R = 500Ω

(4)

Switching Characteristics over Operating Range

PI3B16211

Com.

Parameters Description Conditions

tPLH Propagation Delay tPHL Ax to Bx, Bx to Ax tPZH Bus Enable Time 1 4.5 ns tPZL BE to Ax or Bx

(2,3)

CL = 50pF

RL = 500Ω, R = 500Ω

tPHZ Bus Disable Time 1 5.0 tPLZ BE to Ax or Bx

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.

4. Applies to tPZX, tPXZ.

(1)

Min. Max. Units

0.25

(4)

Pericom Semiconductor Corporation

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

PS8176B 11/09/98