PI5C3251QEX [PERICOM]

Bus Exchanger, CBT/FST/QS/5C/B Series, 1-Func, 8-Bit, True Output, CMOS, PDSO16, 0.150 INCH, GREEN, PLASTIC, QSOP-16;


型号：	PI5C3251QEX
厂家：	PERICOM SEMICONDUCTOR CORPORATION
描述：	Bus Exchanger, CBT/FST/QS/5C/B Series, 1-Func, 8-Bit, True Output, CMOS, PDSO16, 0.150 INCH, GREEN, PLASTIC, QSOP-16 光电二极管逻辑集成电路
文件：	总6页 (文件大小：388K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

PI5C3251

8:1 Mux/DeMux BusSwitch

Features:

Description:

• Near-Zero propagation delay

Pericom Semiconductor’s PI5C3251 is a Dual 8:1 Multiplexer/

Demultiplexer with three-state outputs that is pinout compatible

with the PI74FCT251T, 74F251, and 74ALS/AS/LS 251. 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 251 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

VCC

GND

(1)

Truth Table

Pin Description

Select

Pin Name

I0–7

S0–2

Description

Function

Disable

Data Inputs

Select Inputs

Enable

Hi-Z

S2-0 = 0

S2-0 = 1

S2-0 = 2

S2-0 = 3

S2-0 = 4

S2-0 = 5

S2-0 = 6

S2-0 = 7

Data Outputs

Ground

GND

Power

Note:

H = High Voltage Level, L = Low Voltage Level

PS7016C

05/11/06

06-0239

PI5C3251

8:1 Mux/DeMux BusSwitch

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

RATINGSmaycausepermanentdamagetothedevice.

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 speciﬁca-

tion is not implied. Exposure 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.....................................................................................120 mA

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

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

(1)

(2)

Parameters

Description

Input HIGH Voltage

Input LOW Voltage

Input HIGH Current

Input LOW Current

Test Conditions

Guaranteed Logic HIGH Level

Guaranteed Logic LOW Level

Min.

2.0

Typ

Max.

Units

–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 = 48 mA

(4)

Switch On-Resistance

Ω

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

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)

Parameters

Description

Input Capacitance

I - I Capacitance, Switch Off

Test Conditions

Typ.

Max.

Units

I(OFF)

= 0V

Y(OFF)

Y Capacitance, Switch Off

I - I Capacitance, Switch On

I(ON)

Notes:

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

PS7016C

05/11/06

06-0239

PI5C3251

8:1 Mux/DeMux BusSwitch

Power Supply Characteristics

(1)

(2)

Parameters

Description

Test Conditions

Min. Typ

Max. Units

= GND or

ICC

Quiescent Power Supply Current

= Max.

0.1

3.0

2.5

µA

Supply Current per

Input @ TTL HIGH

(3)

ΔICC

= Max.

= Max.,

= 3.4V

I and Y Pins Open

E = GND

Control Input Toggling

50% Duty Cycle

Supply Current per

Input per MHz

mA/

MHz

ICCD

0.25

(4)

Notes:

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

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

3. Per TTL driven input (VIN = 3.4V, control inputs only); I and Y 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 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

Unit

Min.

Max.

(1,2)

Propagation Delay

0.25

In to Y

Bus Select Time

Sn to Y

0.5

6.6

6.0

CL = 50 pF

RL = 500Ω

Bus Enable Time

E to Y

PZH

PZL

Bus Disable Time

E to Y

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.

PS7016C

05/11/06

06-0239

PI5C3251

8:1 Mux/DeMux BusSwitch

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

.035

0.41

0.89

0.254

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

PS7016C

05/11/06

06-0239

PI5C3251

8:1 Mux/DeMux BusSwitch

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

0.65

0.19

0.30

PS7016C

05/11/06

06-0239

PI5C3251

8:1 Mux/DeMux BusSwitch

Ordering Information

Ordering Code

PI5C3251Q

Package Code

Package Description

16-pin 150-mil wide QSOP

PI5C3251QE

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

16-pin 300-mil wide SOIC

PI5C3251S

PI5C3251W

16-pin 150-mil wide SOIC

PI5C3251L

16-pin 173-mil wide TSSOP

PI5C3251LE

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

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

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

PS7016C

05/11/06

06-0239

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