Bus Transceivers | MC74VHC245

Octal Bus Transceiver

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Overview

The MC74VHC245 is an advanced high speed CMOS octal bus transceiver fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation.

It is intended for two-way asynchronous communication between data buses. The direction of data transmission is determined by the level of the DIR input. The output enable pin (OE) can be used to disable the device, so that the buses are effectively isolated.

All inputs are equipped with protection circuits against static discharge.

  • High Speed: tPD = 4.0ns (Typ) at VCC = 5V
  • Low Power Dissipation: ICC = 4µA (Max) at TA = 25 C
  • High Noise Immunity: VNIH = VNIL = 28% VCC
  • Power Down Protection Provided on Inputs
  • Balanced Propagation Delays
  • Designed for 2V to 5.5V Operating Range
  • Low Noise: VOLP = 1.2V (Max)
  • Pin and Function Compatible with Other Standard Logic Families
  • Latchup Performance Exceeds 300mA
  • ESD Performance: HBM > 2000V; Machine Model > 200V
  • Chip Complexity: 308 FETs or 77 Equivalent Gates

    APPLICATION NOTES
  • Do not force a signal on an I/O pin when it is an active output,
    damage may occur.
  • All floating (high impedance) input or I/O pins must be fixed by
    means of pull up or pull down resistors or bus terminator ICs.
  • A parasitic diode is formed between the bus and VCC terminals.
    Therefore, the VHC245 cannot be used to interface 5V to 3V systems
    directly.
  • These devices are available in Pb-free package(s). Specifications herein apply to both standard and Pb-free devices. Please see our website at www.onsemi.com for specific Pb-free orderable part numbers, or contact your local ON Semiconductor sales office or representative.

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Channels

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VCC Min (V)

VCC Max (V)

tpd Max (ns)

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Pricing ($/Unit)

MC74VHC245DTR2G

Active

CAD Model

Pb

A

H

P

TSSOP-20

9.48

1

260

REEL

2500

N

8

3-State

2

5.5

7.5

8

$0.3276

More Details

MC74VHC245DWR2G

Active

CAD Model

Pb

A

H

P

SOIC-20W

751D-05

3

260

REEL

1000

N

8

3-State

2

5.5

7.5

8

$0.3877

More Details

MC74VHC245DWG

Active

CAD Model

Pb

A

H

P

SOIC-20W

751D-05

3

260

TUBE

38

N

8

3-State

2

5.5

7.5

8

$0.4031

More Details

MC74VHC245DTG

Last Shipments

CAD Model

Pb

A

H

P

TSSOP-20

9.48

1

260

TUBE

75

N

8

3-State

2

5.5

7.5

8

Price N/A

More Details

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