PERIC PI3B16215A, PI3B16215B Datasheet

PI3B16215

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3.3V, Hot Insertion, 20-Bit FET BusSwitch w/Precharged Outputs

Product Features

•Near Zero Propagation Delay

•5Ω Switches Connect Between Two Ports

•Fast Switching Speed: 4.5ns max.

•Permits Hot Insertion

•Isolation during Power-Off conditions

•B-Port Outputs are precharged by Bias Voltage to minimize signal distortion during live insertion

•Package options include:

–48-pin 150-mil wide plastic BQSOP (B)

–48-pin 240-mil wide plastic TSSOP (A)

–48-pin300-milwideplasticSSOP(V)

Logic Block Diagram

						1						BIASV
	2
1A1						46
												1B1
		SW

1A10	12	SW	36	1B10
1OE	48
2A1	13	SW	35	2B1
2A10	24	SW	25	2B10
2OE	47

A B

Product Description

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

The PI3B16215 provides 20-bits of high-speed bus switching. Low on-state resistance of the switch allows connections to be made with minimal propagation delay. The device also precharges the B-port to a user-selectable bias voltage (BIASV) to minimize liveinsertion noise.

The device is organized as dual 10-bit bus switches with individual output-enable (OE) inputs. When OE is LOW, the corresponding 10-bit bus switch is on and port A is connected to port B. When OE is HIGH, the switch is open, a high-impedance state exists between the two ports, and port B is precharged to BIASV through the equivalent of a 10-kΩ resistor.

To ensure the high-impedance state on power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver connected to OE.

ProductPinConfiguration

BIASV		1		48
						1OE
1A1
		2		47		2OE
1A2		3		46		1B1
1A3				45		1B2
		4
1A4		5		44		1B3
1A5		6		43		1B4
1A6				42		1B5
		7
GND				41		GND
		8
1A7			48-Pin	40		1B6
		9
1A8				39		1B7
		10
1A9			A,B,V	38		1B8
		11
1A10				37		1B9
		12
2A1		13		36		1B10
2A2				35		2B1
		14
Vcc				34		2B2
		15
2A3		16		33		2B3
GND				32		GND
		17
2A4				31		2B4
		18
2A5		19		30		2B5
2A6				29		2B6
		20
2A7				28		2B7
		21
2A8				27		2B8
		22
2A9				26		2B9
		23
2A10				25		2B10
		24

OE

1

PS8190D

05/04/00

PI3B16215 3.3V, Hot Insertion, 20-BitFETBusSwitchw/PrechargedOutputs

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Maximum Ratings

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

......................................Storage Temperature Range, TSTG	–65ºC to +150ºC
Supply Voltage Range, VCC .........................................	–0.5V to +4.6V
Bias Voltage Range, BIASV ........................................	–0.5V to +4.6V
Input Voltage Range ........................................................	–0.5V to +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.

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

Parameter	Description		Test Conditions		Min.	Typ.	Max.	Units
BIASV	Bias Voltage				0		VCC
VIH	High-Level Control Input Voltage	VCC = 2.7V to 3.6V			2			V
VIL	Low-Level Control Input Voltage	VCC = 2.7V to 3.6V			–0.5		0.8
VIK	Clamp Diode Voltage	VCC = 3.0V		II = –18mA		–0.7	–1.2
II	Input Current	VCC = 3.6V		VI = VCC or GND			±5	µA
IOZH	High Impedance Output Current	VCC = 0		VI = VO = 0 to 3.6V			10
IO	Output Current	VCC = 3.0V		BIASV = 2.4V, VO = 0	0.15			mA
ICC	Quiescent Power Supply Current	VCC = 3.6V		IO = 0, VI = VCC or GND			10
ICC(1)				One Input at 3V,				µA
	Supply Current	VCC = 3.6V		Other Inputs at VCC or			750
				GND
CIN	Input Capacitance	VI = 3.0V or 0				3.0
								pF
COFF	A/B Capacitance Switch Off	VO = 3.0V or		Switch Off		8.5
		0
		VI = 0		II = 64mA		5	8
RON(2)								Ω
	Switch On Resistance			II = 24mA		5	8
		VI = 2.4V		II = 15mA		10	15

Notes:

1.This is the increase in supply current for each input (OE only) that is at the specified voltage level rather than VCC or GND.

2.Measured by the voltage drop between the A and B terminals at the indicated current through the switch. On state resistance is determined by the lower of the voltages of the two (A or B) terminals.

TruthTable

			Function
	OE
	L		A port = B port
	H		A port = Z, B Port = BIASV

2

PS8190D

05/04/00