PI5C3257LE [DIODES]

Bus Exchanger, CBT/FST/QS/5C/B Series, 4-Func, 1-Bit, True Output, CMOS, PDSO16, TSSOP-16;


型号：	PI5C3257LE
厂家：	DIODES INCORPORATED
描述：	Bus Exchanger, CBT/FST/QS/5C/B Series, 4-Func, 1-Bit, True Output, CMOS, PDSO16, TSSOP-16 光电二极管逻辑集成电路
文件：	总7页 (文件大小：2016K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

A product Line of

Diodes Incorporated

PI5C3257

Quad 2:1 Mux/DeMux Bus Switch

Features:

Description

• Near-Zero propagation delay

The PI5C3257 is a Quad 2:1 multiplexer/demultiplexer with

three-state outputs that is pinout and function compatible with

the PI74FCT257T, 74F257, and 74ALS/AS/LS257. Inputs can

be connected to outputs with low On-Resistance (5Ω) with no

additional ground bounce noise or propagation delay.

• 5Ω switches connect inputs to outputs

•

Direct bus connection when switches are ON

Ultra Low Quiescent Power (0.2µA typical)

– Ideally suited for notebook applications

•

Pin compatible with 74 series 257 logic devices

• Packaging (Pb-free & Green available):

– 16-pin 150-mil wide plastic QSOP (Q)

– 16-pin 150-mil wide plastic SOIC (W)

– 16-pin 173-mil wide plasticTSSOP (L)

Block Diagram

Pin Conﬁguration

IA1 IB0 IB1 IC0 IC1 ID0 ID1

IA0

IA1

ID0

ID1

IC0

IC1

IB0

IB1

GND

(1)

Pin Description

Truth Table

Pin Name

IAn-IDn

Description

Data Inputs

Select Inputs

Enable

Function

Disable

S = 0

Hi-Z Hi-Z Hi-Z Hi-Z

IA0

IB0

IC0

ID0

IA1

IB1

IC1

ID1

S = 1

Note:

YA-YD

GND

V_cc

Data Outputs

Ground

1. H = High Voltage Level, L = Low Voltage Level

Power

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www.diodes.com

01/10/17

17-0007

A product Line of

Diodes Incorporated

PI5C3257

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

Note:

Stresses greater than those listed under MAXIMUM RAT-

INGS 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. Ex-

posure to absolute maximum rating conditions for extended

periods may affect reliability.

Supply Voltage to Ground Potential (Inputs & V Only)....–0.5V to +7.0V

Supply Voltage to Ground Potential (Outputs & D/O Only) .–0.5V to +7.0V

DC Input Voltage ...................................................................–0.5V to +7.0V

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

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

DC Electrical Characteristics (Over the Operating Range, T = –40°C to +85°C, V = 5V ±5%)

(1)

(2)

Parameters

Description

Input HIGH Voltage

Input LOW Voltage

Input HIGH Current

Input LOW Current

Test Conditions

Min. Typ.

Max.

Units

Guaranteed Logic HIGH Level

Guaranteed Logic LOW Level

2.0

–0.5

0.8

±1

= Max., V = V

IN cc

= Max., V = GND

±1

µA

High Impedance Output Current 0 ≤ I, Y ≤ V

±1

OZH

Clamp Diode Voltage

= Min., I = –18 mA

–0.7

–1.2

(3)

Short Circuit Current

I (Y) = 0V, Y (I) = V

100

Input Hysteresis at Control Pins

150

= Min., V = 0.0V, I = 48mA

Ω

(4)

Switch On-Resistance

= Min., V = 2.4V, I = 15mA

Notes:

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

2. Typical values are at V_CC= 5.0V, T_A= 25°C ambient and maximum loading.

3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.

4. Measured by the voltage drop between I and Y pin at indicated current through the switch. On-Resistance is determined

by the lower of the voltages on the two (I,Y) pins.

Capacitance (T = 25°C, f = 1 MHz)

(1)

Description

Parameters

Test Conditions

Typ.

Max.

Units

Input Capacitance

In/Yn Capacitance, Switch Off

In/Yn Capacitance, Switch On

= 0V

OFF

Notes:

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

All trademarks are property of their respective owners.

www.diodes.com

01/10/17

17-0007

A product Line of

Diodes Incorporated

PI5C3257

Power Supply Characteristics

(1)

(2)

Parameters

Description

Test Conditions

Min.

Typ.

Max.

Units

Quiescent Power

Supply Current

or V

= GND

= Max.

0.1

3.0

µA

Supply Current per

Input @ TTL HIGH

(3)

∆I

= Max.

= Max.,

V = 3.4V

2.5

I and Y Pins Open

BE = GND

Control Input Toggling

50% Duty Cycle

Supply Current per

Input per MHz

mA/

MHz

0.25

ccD

(4)

Notes:

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

2. Typical values are at V_CC= 5.0V, +25°C ambient.

3. Per TTL driven input (V_IN= 3.4V, control inputs only); I and Y pins do not contribute to I_CC

4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the speciﬁed frequency. The I

and Y inputs generate no signiﬁcant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design.

Switching Characteristics over Operating Range

Com.

Parameters

Description

Conditions

Units

Min.

Max.

(1,2)

Propagation Delay

0.25

In to Yn

Bus Select Time

Sn to Yn

0.5

5.2

4.8

5.0

c = 50pF

R = 500Ω

Bus Enable Time

E to Yn

PZH

PZL

Bus Disable Time

E to Yn

PHZ

PLZ

Notes:

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

2. 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.

All trademarks are property of their respective owners.

www.diodes.com

01/10/17

17-0007

A product Line of

Diodes Incorporated

PI5C3257

Packaging Mechanical: 16-pin QSOP (Q)

16-0056

All trademarks are property of their respective owners.

www.diodes.com

01/10/17

17-0007

A product Line of

Diodes Incorporated

PI5C3257

Packaging Mechanical: 16-pin SOIC (W)

16-0145

All trademarks are property of their respective owners.

www.diodes.com

01/10/17

17-0007

A product Line of

Diodes Incorporated

PI5C3257

Packaging Mechanical: 16-pin TSSOP (L)

16-0061

Note: For latest package info, please check: http://www.pericom.com/support/packaging/packaging-mechanicals-and-thermal-characteristics/

Ordering Information

Ordering Code

Packaging Code

Package Description

16-pin, 150-mil Wide (QSOP)

PI5C3257QE

PI5C3257QEX

PI5C3257WE

PI5C3257WEX

PI5C3257LE

16-pin, 150-mil Wide (QSOP), Tape & Reel

16-pin, 150-mil Wide (SOIC)

16-pin, 150-mil Wide (SOIC), Tape & Reel

16-pin, 173-mil Wide (TSSOP)

PI5C3257LEX

16-pin, 173-mil Wide (TSSOP), Tape & Reel

Notes:

•

Thermal characteristics can be found on the company web site at www.pericom.com/packaging/

E = Pb-free & Green

• Adding an X sufﬁx = Tape/Reel

All trademarks are property of their respective owners.

www.diodes.com

01/10/17

17-0007

A product Line of

Diodes Incorporated

PI5C3257

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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER

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tice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or

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All trademarks are property of their respective owners.

www.diodes.com

01/10/17

17-0007

PI5C3257LE [DIODES]

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