PI74FCT151TWX [PERICOM]

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型号：	PI74FCT151TWX
厂家：	PERICOM SEMICONDUCTOR CORPORATION
描述：	暂无描述复用器
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PI74FCT151/2151/251T

PI74FCT151T

8-INPUT MULTIPLEXER

PI74FCT251T

(25Ω Series) PI74FCT2151T

Fast CMOS 8-Input Multiplexer

ProductFeatures:

Product Description:

• PI74FCT151/251/2151TispincompatiblewithbipolarFAST™

Pericom Semiconductor’s PI74FCT series of logic circuits are pro-

duced in the Company’s advanced 0.8 micron CMOS technology,

achieving industry leading speed grades.

Series at a higher speed and lower power consumption

• 25Ω seriesresistoronalloutputs(FCT2xxxOnly)

• TTL input and output levels

• Extremelylowstaticpower

• Hysteresis on all inputs

The PI74FCT151T, PI74FCT251T, and PI74FCT2151T are high-

speed 8-input multiplexers. They select one bit from a source of

eight under the control of three select inputs. Both assertion and

negation outputs are provided.

• Industrial operating temperature range: –40°C to +85°C

• Packagesavailable:

The PI74FCT151/2151T has a common, active-LOW, Enable

input (E). When E is LOW, data from one of eight inputs is directed

to the complementary outputs based on the 3-bit code applied to the

Select (S0-S2) inputs. The PI74FCT151/2151T can be used as a

data routing device from one of eight sources.

– 16-pin150-milwideplasticQSOP(Q)

– 16-pin300-milwideplasticSOIC(S)

– 16-pin150-milwideplasticSOIC(W)

The PI74FCT251T has a common Active-LOW Output Enable

(OE) input. When OE is LOW, data from one of eight inputs is

directed to the complementary outputs. When OE is HIGH, both

outputsareswitchedtoahigh-impedancestateallowingmultiplexer

expansion by tying several outputs together.

Logic Block Diagram

FCT251 Only

E for 151

OE for 251

PS2028A 03/11/96

PI74FCT151/2151/251T

8-INPUT MULTIPLEXER

Truth Table⁽¹⁾

Product Pin Description

Inputs

Outputs

Pin Name

I0-I7

S0-S2

Description

E/OE⁽²⁾

L⁽³⁾

Z⁽⁴⁾

H⁽³⁾

Z⁽⁴⁾

Data Inputs

Select Inputs

Enable Input (Active LOW) FCT151/2151T

Output Enable (Active LOW) FCT251T

Data Output

Inverted Data Output

Ground

GND

VCC

Power

PI74FCT151/2151T Product Pin Configuration

Notes:

1. E for 151/2151, OE for 251.

2. H = High Voltage Level

L = Low Voltage Level

X = Don’t Care

Z = High Impedance

3. 151/2151 ONLY.

4. 251 ONLY.

VCC

16-PIN

Q16

S16

W16

* E or OE

GND

* E for 151/2151 only, OE for 251 only

PS2028A 03/11/96

PI74FCT151/2151/251T

8-INPUT MULTIPLEXER

Maximum Ratings

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

StorageTemperature .................................................................... –65°Cto+150°C

Ambient Temperature with Power Applied .....................................-40°Cto+85°C

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

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

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

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.

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

Parameters Description

TestConditions⁽¹⁾Min. Typ⁽²⁾Max. Units

Output HIGH Voltage VCC = Min., VIN = VIH or VIL

VOH

VOL

IOH = –15.0 mA

IOL = 48 mA

2.4

3.0

0.3

Output LOW Current

VCC = Min., VIN = VIH or VIL

0.50

VCC = Min., VIN = VIH or VIL

IOL = 12 mA

(25Ω series)

VIH

VIL

IIH

Input HIGH Voltage

Input LOW Voltage

Input HIGH Current

Input LOW Current

Guaranteed Logic HIGH Level

Guaranteed Logic LOW Level

VCC = Max.

2.0

0.8

VIN =VCC

µA

IIL

VCC = Max.

VIN =GND

–1

IOZH

IOZL

High Impedance

Output Current

VCC = Max.

VOUT =2.7V

VOUT =0.5V

µA

–1

VIK

IOS

Clamp Diode Voltage VCC = Min., IIN = –18 mA

–0.7

–120

—

–1.2

100

Short Circuit Current

Power Down Disable

Input Hysteresis

VCC =Max.⁽³⁾,VOUT =GND

–60

—

µA

IOFF

VCC =GND,VOUT =4.5V

200

Capacitance (TA = 25°C, f = 1 MHz)

Parameters⁽⁴⁾

Description

Test Conditions

VIN = 0V

Typ

Max.

Units

CIN

Input Capacitance

Output Capacitance

COUT

VOUT = 0V

Notes:

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

2. Typical values are at Vcc = 5.0V, +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. This parameter is determined by device characterization but is not production tested.

PS2028A 03/11/96

PI74FCT151/2151/251T

8-INPUT MULTIPLEXER

Power Supply Characteristics

Parameters Description

Test Conditions⁽¹⁾

Min. Typ⁽²⁾Max. Units

ICC

Quiescent Power

Supply Current

VCC = Max.

VIN = GND or VCC

0.1

500

µA

∆ICC

ICCD

Supply Current per

Input @ TTL HIGH

VCC = Max.

VIN = 3.4V⁽³⁾

0.5

2.0

Supply Current per

Input per MHz⁽⁴⁾

VCC = Max.,

Outputs Open

VIN = VCC

VIN = GND

0.15

0.25

mA/

MHz

E or OE = GND

One Bit Toggling

50% Duty Cycle

Total Power Supply

Current⁽⁶⁾

VCC = Max.,

Outputs Open

fI = 10 MHZ

50% Duty Cycle

E or OE = GND

One Bit Toggling

VIN = VCC

VIN = GND

3.2

3.5

6.5⁽⁵⁾

7.5⁽⁵⁾

VIN = 3.4V

VIN = GND

Notes:

1. For conditions shown as Max. or Min., 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 (V^IN= 3.4V); all other inputs at Vcc or GND.

4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.

5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested.

6. I^C=IQUIESCENT + IINPUTS + IDYNAMIC

IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fINI)

ICC = Quiescent Current

∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)

DH = Duty Cycle for TTL Inputs High

NT = Number of TTL Inputs at DH

ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)

fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)

fI = Input Frequency

NI = Number of Inputs at fI

All currents are in milliamps and all frequencies are in megahertz.

PS2028A 03/11/96

PI74FCT151/2151/251T

8-INPUT MULTIPLEXER

PI74FCT151/2151T Switching Characteristics over Operating Range

151T/2151T

Com.

151AT/2151AT

Com.

151CT/2151CT

Com.

Parameters

Description

Conditions⁽¹⁾

Min

1.5

Max

9.0

Min

Max

Min

Max

Unit

PLH

PHL

PLH

PHL

PLH

PHL

PLH

PHL

PLH

PHL

PLH

PHL

PropagationDelay

Sn to Z

= 50 pF

1.5

6.6

1.5

5.6

= 500

Ω

PropagationDelay

Sn to Z

1.5

10.5

7.0

9.5

6.5

7.5

1.5

6.8

5.6

5.8

5.2

5.5

1.5

5.8

4.8

5.0

4.4

4.7

PropagationDelay

E to Z

PropagationDelay

E to Z

PropagationDelay

In to Z

PropagationDelay

In to Z

PI74FCT251T Switching Characteristics over Operating Range

251T

Com.

251AT

Com.

251CT

Com.

Parameters

Description

Conditions⁽¹⁾

Min

Max

Min

Max

Min

Max

Unit

PLH

PHL

PLH

PHL

PLH

PHL

PLH

PHL

PZH

PZL

PHZ

PLZ

PZH

PZL

PHZ

PLZ

PropagationDelay

Sn to Z

= 50 pF

1.5

9.0

1.5

6.6

1.5

5.6

= 500

Ω

PropagationDelay

Sn to Z

1.5

11.0

7.0

9.0

7.5

9.0

7.0

1.5

6.8

5.2

5.5

6.7

6.0

6.7

6.0

1.5

5.8

4.4

4.7

5.7

5.0

5.7

5.0

PropagationDelay

In to Z

PropagationDelay

In to Z

Output Enable Time

OE to Z

Output Disable Time⁽³⁾

OE to Z

Output Enable Time

OE to Z

Output Disable Time⁽³⁾

OE to Z

Notes:

1. See test circuit and wave forms.

2. Minimum limits are guaranteed but not tested on Propagation Delays.

3. This parameter is guaranteed but not production tested.

Pericom Semiconductor Corporation

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

PS2028A 03/11/96

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