CD74HCT240E datasheet(1/8 Pages) TI

Part #	CD74HCT240E

Description	High Speed CMOS Logic Octal Buffer/Line Drivers, Three-State

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Manufacturer	TI [Texas Instruments]

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Data sheet acquired from Harris Semiconductor

SCHS167

Features

• CD74HC/HCT240 Inverting

• CD74HC/HCT241 Non-Inverting

• CD74HC/HCT244 Non-Inverting

• Typical Propagation Delay = 8ns at VCC = 5V,

CL = 15pF, TA = 25

oC for HC240

• Three-State Outputs

• Buffered Inputs

• High-Current Bus Driver Outputs

• Fanout (Over Temperature Range)

- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads

- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

• Wide Operating Temperature Range . . . -55oC to 125oC

• Balanced Propagation Delay and Transition Times

• Signiﬁcant Power Reduction Compared to LSTTL

Logic ICs

• HC Types

- 2V to 6V Operation

- High Noise Immunity: NIL = 30%, NIH = 30% of VCC

at VCC = 5V

• HCT Types

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,

VIL= 0.8V (Max), VIH = 2V (Min)

- CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH

Pinout

CD74HC240, CD74HCT240, CD74HC241, CD74HCT241,

CD74HC244, CD74HCT244

(PDIP, SOIC)

TOP VIEW

11

12

13

14

15

16

17

18

20

19

10

9

8

7

6

5

4

3

2

1

1OE

1A0

2Y3

1A1

2Y2

1A2

1A3

2Y1

2Y0

GND

VCC

1Y0

2A3

1Y1

2OE (241)

2A2

1Y2

2A1

1Y3

2A0

241

244

240

VCC

1Y0

2A3

1Y1

2OE (240, 244)

2A2

1Y2

2A1

1Y3

2A0

1OE

1A0

2Y3

1A1

2Y2

1A2

1A3

2Y1

2Y0

GND

241

244

240

November 1997

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

Copyright

CD74HC240, CD74HCT240,

CD74HC241, CD74HCT241,

CD74HC244, CD74HCT244

High Speed CMOS Logic

Octal Buffer/Line Drivers, Three-State

File Number

1656.1

[ /Title

(CD74

HC240

,

CD74

HCT24

0,

CD74

HC241

,

CD74

HCT24

1,

CD74

HC244

,

CD74

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