Datasheet PI3B16212, PI3B162212 Datasheet (PERICOM)

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PS8180A 11/09/98

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PI3B16212

PI3B162212 (25

ΩΩ

Ω)

3.3V, 24-Bit Bus Exchange Switch

Product Description

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

The PI3B16212 and PI3B162212 are 3.3 volt, 24-bit bus exchange switches designed with a low ON resistance allowing inputs to be connected directly to outputs. The devices operate as a 24-bit bus switch or as a 12-bit exchanger, providing data exchange between the four signal ports via the data select pins (S0-S2).

The PI3B162212 device has a built-in 25-ohm series resistor to reduce noise due to reflections, thus eliminating the need for an external terminating resistor.

Product Features

• Near-zero propagation delay

•5Ω switches connect inputs to outputs

• Direct bus connection when switches are ON

• Fast Switching Speed - 5ns (max.)

•VCC Operating Range: 3.0V to 3.6V

• 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)

Product Pin Configuration

56-PIN

A, V

FLOW CONTROL

ONE OF TWELVE CHANNELS

1 2 3 4 5 6 7

GND 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

11A 12A

22A 31A 32A

41A 42A 51A 52A 61A 62A

71A 72A

81A

GND

82A 91A

92A 10 1A 10 2A

11 1A 11 2A 12 1A 12 2A

GND

11B 12B

22B 31B

32B 41B 42B 51B 52B 61B 62B 71B 72B 81B

GND

82B 91B 92B 10 1B 10 2B

11 1B 11 2B 12 1B 12 2B

Function S2 S1 S0 A1 A2

Disconnect L LLZZ A1 to B1 L L H B1 Z A1 to B2 L H L B2 Z A2 to B1 L H H Z B1 A2 to B2 H L L Z B2 Disconnect H L H Z Z A1 to B1, A2 to B2 H H L B1 B2 A1 to B2, A2 to B1 H H H B2 B1

Logic Block Diagram

Product Pin Description

Pin Name I/O Description

S0-S2 I Select Inputs xAx I/O Bus A xBxI/OBus B

Note:

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

Truth Table

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PI3B16212/162212

3.3V, 24-Bit Bus-Exchange Switch

PS8180A 11/09/98

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DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 3.0V to 3.6V)

Parameters Description Test Conditions

(1)

Min. Typ

(2)

Max. Units

VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0   V VIL Input LOW Voltage Guaranteed Logic LOW Level 0.5  0.8 V II Input Current VCC = Max., VIN = VCC or GND   ±1 µA

VCC = 0, VIN = VCC 10µA

IOZH High Impedance Output Current 0 ≤ A, B ≥ VCC, Switches Off   ±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, 16212  5 8 Ω ION = 64mA 162212 20 28 40

VCC = Min., VIN = 2.4V, 16212  10 15 Ω ION = 15mA 162212 20 35 48

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 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.

Capacitance (TA = 25°C, f = 1 MHz)

Parameters

(4)

Description Test Conditions Typ. Units

CIN Input Capacitance VIN = 0V 3.0 pF COFF A/B Capacitance, Switch Off VIN = 0V 14.0 pF

CON A/B Capacitance, Switch On VIN = 0V 30.0 pF

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, 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.

Page 3

PI3B16212/162212

3.3V, 24-Bit Bus-Exchange Switch

PS8180A 11/09/98

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Power Supply Characteristics

Parameters Description Test Conditions

(1)

Min. Typ

(2)

Max. Units

ICC Quiescent Power VCC = MAX.VIN = GND or VCC ——10µA

Supply Current

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

(3)

— — 750 µA

Input @ TTL HIGH

ICCD Supply Current per VCC = Max., VIN = 3V — — 0.25 mA/

Input per MHz

(4)

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

Notes:

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

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

3. This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.

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

5. 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.

PI3B16212 Switching Characteristics over Operating Range

PI3B16212

Com.

Parameters Description Conditions

(1)

Min. Max. Units

tPLH Propagation Delay

(2,3)

CL = 50pF 16212 — 0.25

tPHL Ax to Bx, Bx to Ax RL = 500Ω 162212 — 1.25 t

PZH Bus Enable Time CL = 50pF, 1 4.5 ns

PZL BE to Ax or Bx RL = 500Ω,

PHZ Bus Disable Time R = 500Ω 15

PLZ 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.

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PI3B16212/162212

3.3V, 24-Bit Bus-Exchange Switch

PS8180A 11/09/98

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DESCRIPTION: 56-PIN SSOP (300 MIL WIDE)

PACKAGE CODE: V56

Document Control No. PD-1402

REVISION 1/17/97

Pericom Semiconductor Corporation

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

0.025

0.025 Typical

0.635

0.008

0.20

0.005

0.010

0 - 8˚

0.127

0.254

0.095

0.108

2.41

2.74

0.010

0.25

Gauge Plane

0.291

0.299

X.XX

7.39

7.59

0.396

0.416

10.06

10.56

0.02

0.04

0.55

1.01

0.088

0.092

2.24

2.34

0.015

0.025

0.381

0.635

0.720

0.730

18.29

18.54

0.008

0.0135

0.20

0.34

x 45˚

DENOTES DIMENSIONS

IN MILLIMETERS