SN74LVCE161284DL

Specialty Logic Overview

The SN74LVCE161284DL is a 19-bit IEEE Std 1284 translation transceiver designed for asynchronous two-way communication between data buses. It operates with VCC at 3 V to 3.6 V and VCC CABLE at 3 V to 5.5 V. The device features an auto-power-up function that prevents printer errors during power-on by keeping Y outputs high until valid signals are detected. It includes integrated 1.4-kΩ pullup resistors on open-drain outputs, eliminating the need for discrete components. The flow-through architecture optimizes PCB layout, while Ioff and Power-Up 3-State support hot insertion.

Specialty Logic Feature Summary

• Auto-Power-Up feature prevents printer errors when the printer is turned on without valid signals at A9–A13 pins
• Integrated 1.4-kΩ pullup resistors on all open-drain outputs eliminate the need for discrete resistors
• Designed for IEEE Std 1284-I (Level-1 Type) and IEEE Std 1284-II (Level-2 Type) electrical specifications
• Flow-through architecture optimizes PCB layout

Specialty Logic Applications

• IEEE Std 1284-I parallel peripheral interface applications
• IEEE Std 1284-II parallel peripheral interface applications
• Printer systems requiring error-free power-up sequences
• Asynchronous two-way communication between data buses

Specialty Logic Procurement Notes

Verify the specific package type required for your design, as the DL suffix indicates an SSOP-48 package. Confirm voltage requirements match the 3 V to 3.6 V VCC range and up to 5.5 V VCC CABLE. Ensure compatibility with IEEE Std 1284 standards if used in peripheral interfaces. Check operating temperature range of 0°C to 70°C against your environmental constraints.

Specialty Logic Selection Notes

Select this component when designing systems compliant with IEEE Std 1284 parallel interfaces. It is suitable for applications requiring asynchronous bidirectional data transfer with integrated pullup resistors. Consider the SSOP-48 package size and 0°C to 70°C operating temperature range. The auto-power-up feature makes it ideal for printer connections where signal integrity during startup is critical.

Specialty Logic Part Context

This part belongs to the SN74LVCE161284 family of translation transceivers from Texas Instruments. It is specifically engineered for IEEE Std 1284 compliance, offering both Level-1 and Level-2 electrical specifications. The device integrates control functions to minimize external timing requirements, providing a compact solution for parallel peripheral interfaces.

Specialty Logic Replacement Considerations

SN74LVCE161284DGGR is a TSSOP-48 variant of the same functional device. SN74LVCE161284DLR is the tape-and-reel version of the SSOP-48 package. Verify pinout and package dimensions before substitution.

Specialty Logic FAQ

How does the auto-power-up feature work?

The Y outputs (Y9–Y13) stay in the high state after power-on until one of the associated inputs (A9–A13) goes high. This prevents printer-system errors caused by deasserting the BUSY signal in the cable at power-on.

What is the purpose of the HD control pin?

The HD control pin determines the output drive mode. When HD is high, the outputs are in a totem-pole configuration; when HD is low, they are in an open-drain configuration, meeting IEEE Std 1284 drive requirements.