74HC245DTR2G

Overview

The onsemi 74HC245DTR2G is an octal, 3-state noninverting bus transceiver manufactured using high-performance silicon-gate CMOS technology. It operates within a DC supply voltage range of 2.0 V to 6.0 V and features bidirectional data transmission between two 8-bit buses controlled by Direction (DIR) and Output Enable (OE) inputs. The device provides an output drive capability equivalent to 15 LSTTL loads and includes low input current characteristics. It is housed in a TSSOP-20 package with a tape and reel shipping configuration.

Feature Summary

• Provides bidirectional asynchronous communication between data buses via DIR control
• Features active-low OE pin for placing I/O ports into high-impedance states
• Outputs directly interface to CMOS, NMOS, and TTL logic families
• Includes high noise immunity characteristic of CMOS devices

Applications

• Asynchronous communication between data buses
• Bus-oriented transfers in industrial control systems
• Driving capacitive or resistive loads across multiple logic families

Procurement Notes

Verify the specific ordering suffix 'DTR2G' corresponds to the TSSOP-20 package and tape and reel quantity of 2500 units. Confirm that the component meets lead-free requirements as indicated by the '2G' designation. Ensure compatibility with standard JEDEC standards for moisture sensitivity level 1 before finalizing procurement specifications.

Selection Notes

Select this component when an octal bus transceiver with wide voltage operation from 2.0 V to 6.0 V is required. It is suitable for applications needing direct interfacing with LSTTL loads due to its 15-load drive capability. Consider the TSSOP-20 package dimensions if surface-mount space is constrained compared to traditional DIP packages.

Part Context

This part belongs to the 74HC245 family of octal bus transceivers. It shares identical pinouts with the LS245 variant but utilizes CMOS technology for lower power consumption. The device is designed for general-purpose digital logic applications requiring reliable bidirectional data transfer across mixed-voltage environments.

Replacement Considerations

Direct pin-compatible replacements include other manufacturers' 74HC245 variants in TSSOP-20 packages. Verify electrical parameters such as propagation delay and output current capabilities against the original datasheet specifications to ensure functional equivalence in existing circuit designs.