PERICOM PI74FCT2240TP, PI74FCT2240TQ, PI74FCT2240TR, PI74FCT2240TS, PI74FCT2241TH Datasheet

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PERICOM PI74FCT2240TP, PI74FCT2240TQ, PI74FCT2240TR, PI74FCT2240TS, PI74FCT2241TH Datasheet

PI74FCT240T/241T/ 244T/540T/541T (25 ohmSeries)

PI74FCT2240T/2241T/2244T/2541T

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ProductFeatures

PI74FCT240/241/244/540/541TandPI74FCT2240/2241/2244/ 2541T are 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

Low ground bounce outputs

Extremely low static power

Hysteresis on all inputs

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

Packages available:

20-pin 173 mil wide plastic TSSOP (L)

20-pin 209 mil wide plastic SSOP (H)

20-pin 300 mil wide plastic DIP (P)

20-pin 150 mil wide plastic QSOP (Q)

20-pin 150 mil wide plastic TQSOP (R)

20-pin 300 mil wide plastic SOIC (S)

Device models available upon request

Fast CMOS Octal

Buffer/Line Drivers

ProductDescription

Pericom Semiconductor’s PI74FCT series of logic circuits are produced in the Company’s advanced 0.6/0.8 micron CMOS technology, achieving industry leading speed grades. All PI74FCT2XXX devices have a built-in 25 ohm series resistor on all outputs to reduce noise because of reflections, thus eliminating the need for an external terminating resistor.

The PI74FCT240T/241T/244T/540T/541T and P174FCT2240T/ 2241T/2244/2541T are 8-bit wide driver circuits, designed to be used in applications requiring high-speed and high-output drive. Ideal applications would include bus drivers, memory drivers, address drivers, and system clock drivers.

The PI74FCT540T and PI74FCT541/2541T provide similar driver capabilities, but have their pins physically grouped by function. All inputs are located on one side of the package, while outputs are on the opposite side, allowing for a much simpler and denser board layout.

Logic Block Diagrams

PI74FCT240/2240T

OEA

 

 

OEB

DA0

OA0

OB0

DB0

DA1

OA1

OB1

DB1

DA2

OA2

OB2

DB2

DA3

OA3

OB3

DB3

PI74FCT241/2241T

PI74FCT540T

PI74FCT244/2244T

PI74FCT541/2541T

 

OEA

OEB

OEA

241 Only

 

 

 

 

 

 

OEB*

 

 

DA0

OA0

D0

O0

 

 

OB0

DB0

D1

O1

 

 

DA1

OA1

D2

O2

 

 

OB1

DB1

D3

O3

 

 

DA2

OA2

D4

O4

 

 

OB2

DB2

D5

O5

DA3

OA3

D6

O6

 

 

OB3

DB3

D7

O7

 

*OEB for 241T, *OEB for 244T,

*Logic diagram shown for 540T.

 

541/2541T is the non-inverting option.

 

 

1

PS2011B

12/11/00

PI74FCT240T/241T/244T/540T/541T(25ohmSeries)

PI74FCT2240T/2241T/2244T/2541T

OctalBuffer/LineDrivers

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Product Pin Description

PinName

Description

 

 

 

 

 

 

 

 

 

 

 

3-State Output Enable Inputs (Active LOW)

OEA, OEB

OEB(1)

3-State Output Enable Input (Active HIGH)

Dxx

Inputs

 

 

 

 

 

 

Oxx

Outputs

 

 

 

 

 

 

GND

Ground

 

 

 

 

 

 

VCC

Power

 

 

 

 

 

 

Truth Table

 

 

 

 

Inputs(1)

 

 

Outputs(1)

 

 

 

OE

A

 

OE

B

OEB(2)

D

240

241

244

 

540

541

 

L

 

L

H

L

H

L

L

 

H

L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

 

L

H

H

L

H

H

 

L

H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H

 

H

L

X

Z

Z

Z

 

Z

Z

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note:

1.H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High Impedance

2.OEB for 241 only.

PI74FCT240/2240T Product Pin Configuration

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OEA

 

1

 

20

 

Vcc

 

 

 

 

DA0

 

 

 

 

 

 

 

 

 

 

 

B

 

 

2

20-Pin

19

 

OE

 

 

OB0

 

 

 

 

 

 

 

 

 

0

 

3

18

 

OA

 

DA1

 

H20

17

 

DB0

 

4

 

 

 

1

 

L20

 

 

OA1

OB

 

5

16

 

 

 

 

DA2

 

P20

15

 

DB1

 

6

 

 

 

2

 

Q20

 

 

 

 

 

2

OB

 

7

14

 

OA

 

 

 

DA3

 

8

R20

13

 

DB2

 

 

 

 

 

OB

3

 

9

S20

12

 

 

OA

3

 

 

GND

 

 

11

 

DB3

 

10

 

 

 

 

 

PI74FCT241/2241/244/2244T Product Pin Configuration

 

 

 

 

 

 

 

 

 

 

 

OEA

 

1

 

20

 

Vcc

 

 

 

 

DA0

 

 

 

 

 

 

 

B

 

 

2

 

19

 

OE

 

 

 

OB0

 

3

20-Pin 18

 

OA0

 

 

 

DA1

 

4

H20

17

 

DB0

 

 

 

 

OB1

 

5

L20

16

 

OA1

 

 

 

DA2

 

6

P20

15

 

DB1

 

 

OB2

 

7

Q20

14

 

OA2

 

 

 

DA3

 

8

R20

13

 

DB2

 

 

OB3

 

9

S20

12

 

OA3

 

 

GND

 

 

11

 

DB3

 

10

 

 

 

 

 

*OEB for 241T, OEB for 244T

PI74FCT540/541/2541T Product Pin Configuration

 

 

 

 

 

 

 

 

 

 

 

OEA

 

1

 

20

 

Vcc

 

 

 

 

D0

 

 

 

 

 

 

 

 

2

 

19

 

 

OE

B

 

 

 

 

D1

 

3

20-Pin 18

 

O0*

 

 

 

D2

 

H20

17

 

O2*

 

4

 

 

D3

 

L20

16

 

O2*

 

5

 

 

D4

 

P20

15

 

O3*

 

6

 

 

 

 

D5

 

7

Q20

14

 

O4*

 

 

 

D6

 

8

R20

13

 

O5*

 

 

 

D7

 

9

S20

12

 

O6*

 

 

GND

 

10

 

11

 

O7*

 

 

 

*Ox for 540T, Ox for 541T

2

PS2011B

12/11/00

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