Datasheet PI74FCT151TQ, PI74FCT151TS, PI74FCT151TW, PI74FCT2151TQ, PI74FCT2151TS Datasheet (PERICOM)

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PI74FCT151/2151/251T

8-INPUT MULTIPLEXER

Logic Block Diagram

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Fast CMOS 8-Input Multiplexer

Product Description:

Pericom Semiconductor’s PI74FCT series of logic circuits are pro­duced in the Company’s advanced 0.8 micron CMOS technology,
achieving industry leading speed grades.

The PI74FCT151T, PI74FCT251T, and PI74FCT2151T are high­speed 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.

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.

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
outputs are switched to a high-impedance state allowing multiplexer
expansion by tying several outputs together.

Product Features:

• PI74FCT151/251/2151T is pin compatible with bipolar FAST™
Series at a higher speed and lower power consumption

•25Ω series resistor on all outputs (FCT2xxx Only)

• TTL input and output levels

• Extremely low static power

• Hysteresis on all inputs

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

• Packages 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)

PI74FCT151T
PI74FCT251T

(25

ΩΩ

ΩΩ

Ω Series) PI74FCT2151T

Z

Z

I

7

I

6

I

5

I

4

I

3

I

2

I

1

I

0

S

0

S

1

S

2

E for 151
OE for 251

FCT251 Only

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PI74FCT151/2151/251T

8-INPUT MULTIPLEXER

Inputs Outputs

S2 S1 S0 E/OE

(2)

ZZ

XXX H L

(3)

H

(3)

XXX H Z

(4)

Z

(4)

LLL L I0 I0
LLH L I1 I1
LHL L I2 I2
LHH L I3 I3
HLL L I4 I4
HLH L I5 I5
HHL L I6 I6
HHH L I7 I7

Product Pin Description

Pin Name Description

I0-I7 Data Inputs
S0-S2 Select Inputs
E Enable Input (Active LOW) FCT151/2151T
OE Output Enable (Active LOW) FCT251T
Z Data Output
Z Inverted Data Output
GND Ground
VCC Power

Truth Table

(1)

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.

PI74FCT151/2151T Product Pin Configuration

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

V

CC

1

I

3

16

I

4

2

I

2

15

I

5

3

I

1

14

I

6

4

I

0

13

I

7

5

Z

12

S

0

6

Z

11

S

1

7

* E

or OE

10

S

2

8

GND

9

16-PIN

Q16

S16

W16

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PI74FCT151/2151/251T

8-INPUT MULTIPLEXER

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

Supply Voltage to Ground Potential (Inputs & Vcc 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

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.

Capacitance (TA = 25°C, f = 1 MHz)

Parameters

(4)

Description Test Conditions Typ Max. Units

CIN Input Capacitance VIN = 0V 6 10 pF
COUT Output Capacitance VOUT = 0V 8 12 pF

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.

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

Parameters Description Test Conditions

(1)

Min. Typ

(2)

Max. Units

VOH Output HIGH Voltage VCC = Min., VIN = VIH or VIL IOH = –15.0 mA 2.4 3.0 V
VOL Output LOW Current VCC = Min., VIN = VIH or VIL IOL = 48 mA 0.3 0.50 V
VOL Output LOW Current VCC = Min., VIN = VIH or VIL IOL = 12 mA 0.3 0.50 V

(25Ω series)

VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 V
VIL Input LOW Voltage Guaranteed Logic LOW Level 0.8 V
IIH Input HIGH Current VCC = Max. VIN = VCC 1µA
IIL Input LOW Current VCC = Max. VIN = GND –1 µA
IOZH High Impedance VCC = Max. VOUT = 2.7V 1 µA

IOZL Output Current VOUT = 0.5V –1 µA
VIK Clamp Diode Voltage VCC = Min., IIN = –18 mA –0.7 –1.2 V
IOS Short Circuit Current VCC = Max.

(3)

, VOUT = GN D –60 –120 m A
IOFF Power Down Disable VCC = GND, VOUT = 4.5V — — 100 µA
VH Input Hysteresis 200 m V

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PI74FCT151/2151/251T

8-INPUT MULTIPLEXER

Power Supply Characteristics

Parameters Description Test Conditions

(1)

Min. Typ

(2)

Max. Units

ICC Quiescent Power VCC = Max. VIN = GND or VCC 0.1 500 µA

Supply Current

∆ICC Supply Current per VCC = Max. VIN = 3.4V

(3)

0.5 2.0 mA

Input @ TTL HIGH

ICCD Supply Current per VCC = Max., VIN = VCC 0.15 0.25 mA/

Input per MHz

(4)

Outputs Open VIN = GND MHz
E or OE = GND
One Bit Toggling
50% Duty Cycle

IC Total Power Supply VCC = Max., VIN = VCC 3.2 6.5

(5)

mA

Current

(6)

Outputs Open VIN = GND
fI = 10 MHZ
50% Duty Cycle VIN = 3.4V 3.5 7.5

(5)

E or OE = GND VIN = GND
One Bit Toggling

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 (VIN = 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. IC =IQUIESCENT + I INPUTS + 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.

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PI74FCT151/2151/251T

8-INPUT MULTIPLEXER

PI74FCT151/2151T Switching Characteristics over Operating Range

151T/2151T 151AT/2151AT 151CT/2151CT

Com. Com. Com.

Parameters Description Conditions

(1)

Min Max Min Max Min Max Unit

t

PLH

Propagation Delay CL = 50 pF 1.5 9.0 1.5 6.6 1.5 5.6 ns

t

PHL

Sn to Z RL = 500

Ω

t

PLH

Propagation Delay 1.5 10.5 1.5 6.8 1.5 5.8 ns

t

PHL

Sn to Z

t

PLH

Propagation Delay 1.5 7.0 1.5 5.6 1.5 4.8 ns

t

PHL

E to Z

t

PLH

Propagation Delay 1.5 9.5 1.5 5.8 1.5 5.0 ns

t

PHL

E to Z

t

PLH

Propagation Delay 1.5 6.5 1.5 5.2 1.5 4.4 ns

t

PHL

In to Z

t

PLH

Propagation Delay 1.5 7.5 1.5 5.5 1.5 4.7 ns

t

PHL

In to Z

PI74FCT251T Switching Characteristics over Operating Range

251T 251AT 251CT
Com. Com. Com.

Parameters Description Conditions

(1)

Min Max Min Max Min Max Unit

t

PLH

Propagation Delay CL = 50 pF 1.5 9.0 1.5 6.6 1.5 5.6 ns

t

PHL

Sn to Z RL = 500

Ω

t

PLH

Propagation Delay 1.5 11.0 1.5 6.8 1.5 5.8 ns

t

PHL

Sn to Z

t

PLH

Propagation Delay 1.5 7.0 1.5 5.2 1.5 4.4 ns

t

PHL

In to Z

t

PLH

Propagation Delay 1.5 7.0 1.5 5.5 1.5 4.7 ns

t

PHL

In to Z

t

PZH

Output Enable Time 1.5 9.0 1.5 6.7 1.5 5.7 ns

t

PZL

OE to Z

t

PHZ

Output Disable Time

(3)

1.5 7.5 1.5 6.0 1.5 5.0 ns

t

PLZ

OE to Z

t

PZH

Output Enable Time 1.5 9.0 1.5 6.7 1.5 5.7 ns

t

PZL

OE to Z

t

PHZ

Output Disable Time

(3)

1.5 7.0 1.5 6.0 1.5 5.0 ns

t

PLZ

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 [phone] • http://www.pericom.com