74AC11245NT

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AC11245NT is an octal bus transceiver with 3-state outputs manufactured by Texas Instruments. It utilizes the EPIC (Enhanced-Performance Implanted CMOS) process and operates within a supply voltage range of 3 V to 5.5 V. The device supports asynchronous two-way communication between data buses, featuring non-inverted transmission controlled by DIR and OE inputs. It is characterized for operation from -40°C to 85°C. Key electrical parameters include a maximum propagation delay of 9.5 ns at 5.5 V and output drive capabilities of ±24 mA. The component is housed in a 24-pin Plastic Dual In-Line Package (PDIP).

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Flow-through architecture optimizes PCB layout.
• Center-pin VCC and GND configurations minimize high-speed switching noise.
• Provides 500-mA typical latch-up immunity at 125°C.

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous two-way communication between data buses

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'NT' corresponds to the 24-pin PDIP package configuration. Confirm that the active status aligns with current production requirements, as other variants may be obsolete. Ensure design compatibility with the specified 3 V to 5.5 V operating voltage range and -40°C to 85°C temperature limits before procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal bus transceiver with 3-state outputs is required for asynchronous data communication. It is suitable for designs needing non-inverted data transmission controlled by direction and enable signals. Consider the 24-pin PDIP package if through-hole mounting is necessary. Verify that the AC logic family characteristics meet the system's speed and voltage requirements.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74AC logic family, which offers higher speeds than standard 74LS devices while maintaining CMOS power consumption. The 74AC11245 variant specifically provides octal (8-bit) bidirectional bus driving capabilities. It is designed for applications requiring robust data transfer between different bus segments with minimal external timing constraints.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for availability of alternative packages such as SOIC (DW) or SSOP (DB) if surface mount is preferred. Verify functional equivalence with other octal bus transceivers in the 74AC series, ensuring pinout and electrical specifications match the existing design constraints.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the function of the DIR input?

The DIR input controls the direction of data transmission. A low level directs data from the B bus to the A bus, while a high level directs data from the A bus to the B bus.

How does the OE input affect the device?

The OE (Output Enable) input disables the device when high, effectively isolating the buses. When low, the device operates according to the DIR input setting.