PI5C3253 [PERICOM]

Dual 4:1 Mux/DeMux Bus Switch; 双4 ： 1复用器/解复用器总线开关


型号：	PI5C3253
厂家：	PERICOM SEMICONDUCTOR CORPORATION
描述：	Dual 4:1 Mux/DeMux Bus Switch 双4 ： 1复用器/解复用器总线开关解复用器开关
文件：	总6页 (文件大小：331K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

PI5C3253

Dual 4:1 Mux/DeMux Bus Switch

Features

Description

• Near-Zero propagation delay

Pericom Semiconductor’s PI5C3253 is a Dual 4:1 Multiplexer/

demultiplexer with three-state outputs that is pinout compatible

with the PI74FCT253T, 74F253, and 74ALS/AS/LS 253. 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 253 logic devices

• Packaging (Pb-free & Green available):

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

– 16-pin 300-mil wide plastic SOIC (S)

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

– 16-pin 173-mil wide plastic TSSOP (L)

Block Diagram

Pin Conﬁguration

GND

(1)

Truth Table

Pin Description

Pin Name

IAn, IBn

S0–1

Enable

Select

Description

Function

Disable A

Disable B

S1-0 = 0

S1-0 = 1

S1-0 = 2

S1-0 = 3

Data Inputs

Select Inputs

Enable

Hi-Z

IB0

IB1

IB2

IB3

EA, EB

IA0

IA1

IA2

IA3

YA, YB

Data Outputs

Ground

GND

Power

Note:

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

PS7017C

09/14/04

PI5C3253

Dual 4:1 Mux/DeMux Bus Switch

Maximum Ratings

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

Note:

Storage Temperature ......................................................... –65°C to +150°C

Ambient Temperature with Power Applied ........................ –40°C to +85°C

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 condi-

tions 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

Test Conditions

Min. Typ.

Max. Units

Input HIGH Voltage

Guaranteed Logic HIGH Level

Guaranteed Logic LOW Level

2.0

Input LOW Voltage

–0.5

0.8

Input HIGH Current

Input LOW Current

= Max., V = V

±1

= Max., V = GND

±1

µA

High Impedance Output Current

0 ≤ I , Y ≤ V

N N CC

OZH

Clamp Diode Voltage

= Min., I = –18mA

–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

(4)

Switch On-Resistance

Ω

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

Capacitance (T = 25°C, f = 1 MHz)

(5)

Parameters

Description

Input Capacitance

I /I Capacitance, Switch Off

Test Conditions

Typ.

Max.

Units

V = 0V

OFF

I /I Capacitance, Switch On

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.

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

PS7017C

09/14/04

PI5C3253

Dual 4:1 Mux/DeMux Bus Switch

Power Supply Characteristics

(1)

(2)

Parameters

Description

Test Conditions

Min.

Typ.

Max.

Units

Quiescent Power

Supply Current

= GND

or V

= 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.

Param-

eters

(1)

Description

Conditions

Units

Min.

Max.

0.25

6.6

(2,3)

Propagation Delay

In to Yn

Bus Select Time, Sn to Yn

0.5

C = 50pF

R = 500Ω

PZH

PZL

Bus Enable Time, En to Yn

6.0

PHZ

PLZ

Bus Disable Time, En to Yn

0.5

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.

PS7017C

09/14/04

PI5C3253

Dual 4:1 Mux/DeMux Bus Switch

Packaging Mechanical: 16-pin QSOP (Q)

.008

0.20

MIN.

.008

.013

0.20

0.33

.150

.157

3.81

3.99

Guage Plane

0˚-6˚

.010

.016

0.254

.035

0.41

0.89

Detail A

.189

.197

.041

1.04

REF

4.80

5.00

0.38

.015 x 45°

.008

0.203 REF

1.35

1.75

.053

.069

Detail A

0.178

0.254

.007

.010

0.41

1.27

.016

.050

SEATING

PLANE

.228

.244

.004

.010

0.101

0.254

.008

.012

.025

BSC

0.635

5.79

6.19

0.203

0.305

X.XX

DENOTES DIMENSIONS IN MILLIMETERS

Packaging Mechanical: 16-pin SOIC (S)

7.40

7.60

.2914

.2992

0.254

0.737

.010

.029

x 45˚

0.23

0.32

.398 10.10

.413 10.50

.0091

.0125

0-8˚

.020 0.508

.030 0.762

0.41

1.27

2.35

2.64

.016

.050

.0926

.1043

.394

.419

10.00

10.65

SEATING

PLANE

0.10

0.30

.0040

.0118

.013

.050

BSC

.020

0.33

0.51

X.XX

DENOTES DIMENSIONS

IN MILLIMETERS

1.27

PS7017C

09/14/04

PI5C3253

Dual 4:1 Mux/DeMux Bus Switch

Packaging Mechanical: 16-pin SOIC (W)

3.78

3.99

.149

.157

0.25

0.50

.0099

.0196

x 45˚

0.19

0.25

.0075

.0098

0-8˚

.386

.393

9.80

10.00

0.41

1.27

.016

.050

1.35

1.75

.053

.068

.0155

.0260

.2284

.2440

5.80

6.20

0.393

0.660

SEATING PLANE

REF

0.10

0.25

.0040

.0098

.050

BSC

.013

.020

1.27

0.330

0.508

X.XX

DENOTES DIMENSIONS

IN MILLIMETERS

Packaging Mechanical: 16-pin TSSOP (L)

.169

.177

4.3

4.5

0.09

0.20

.193

.201

.004

.008

4.9

5.1

.047

max.

1.20

0.45 .018

0.75 .030

SEATING

PLANE

.252

BSC

6.4

.002

.006

0.05

0.15

.0256

BSC

.007

.012

X.XX DENOTES CONTROLLING

X.XX DIMENSIONS IN MILLIMETERS

0.65

0.19

0.30

PS7017C

09/14/04

PI5C3253

Dual 4:1 Mux/DeMux Bus Switch

Ordering Information

Ordering Code

PI5C3253Q

Package Code

Package Description

16-pin 150-mil wide QSOP

PI5C3253QE

PI5C3253S

Pb-free & Green, 16-pin 150-mil wide QSOP

16-pin 300-mil wide SOIC

PI5C3253SE

Pb-free & Green, 16-pin 300-mil wide SOIC

16-pin 150-mil wide SOIC

PI5C3253W

PI5C3253WE

PI5C3253L

Pb-free & Green, 16-pin 150-mil wide SOIC

16-pin 173-mil wide TSSOP

PI5C3253LE

Pb-free & Green, 16-pin 173-mil wide TSSOP

Notes:

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

Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com

PS7017C

09/14/04

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