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74AC245MTCX

Octal bus transceiver, 3-state, TSSOP-20

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Manufacturer Part：

74AC245MTCX

Package：

TSSOP-20 (6.5 x 4.4 mm)

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Description

Product Overview

The 74AC245MTCX from onsemi is an octal bus transceiver with 3-state outputs in a 20-pin TSSOP package. The AC family provides high-speed CMOS performance with 6.5ns propagation delay at 5V. With direction control (DIR) and output enable (OE), it buffers bidirectional data buses in microprocessor and backplane systems.

Key Specifications

Function Octal bus transceiver
Output Type 3-state (non-inverting)
Supply Voltage 2V to 6V
Propagation Delay 6.5ns typical @ 5V
Output Drive +/-24mA @ 5V
Direction Control DIR pin (A->B or B->A)
Output Enable OE pin (active low)
Iq 80uA max @ 5.5V
Operating Temp -40 to +85 C
Package TSSOP-20

Features

  • AC-family high-speed CMOS (6.5ns @ 5V)
  • +/-24mA high output drive
  • Bidirectional transceiver with DIR control
  • 3-state outputs for bus sharing
  • 2V to 6V wide supply range
  • Non-inverting data path

Applications

  • Microprocessor bus buffering
  • Backplane data transceivers
  • Memory interface drivers
  • Bidirectional data bus isolation

The 74AC245MTCX from onsemi is an octal bus transceiver with 3-state outputs in a 20-pin TSSOP package. The AC family provides high-speed CMOS performance with 6.5ns propagation delay at 5V. With direction control (DIR) and output enable (OE), it buffers bidirectional data buses in microprocessor and backplane systems.

The 74AC245MTCX operates as described in the product overview. Key subsystems include the input stage, processing/gain stage, output stage, and protection circuitry as detailed in the datasheet.

Pin Name Type Description
1 DIR Input Direction (A-to-B or B-to-A)
2-9 A1-A8 I/O A-side bus
10 GND Power Ground
11-18 B8-B1 I/O B-side bus
19 OE Input Output enable (active low)
20 VCC Power Supply (2-6V)
  • Microprocessor bus buffering
  • Backplane data transceivers
  • Memory interface drivers
  • Bidirectional data bus isolation
Model Manufacturer Package Notes
SN74AC245PW TI TSSOP-20 Pin-compatible
74HC245D Nexperia SOIC-20 HC family, slower
74LVC245PW Nexperia TSSOP-20 1.65-3.6V LVC
MC74VHC245DTR2G onsemi TSSOP-20 VHC family
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