74ALVCH16501DGG:11

Overview

The SN74ALVCH16501DGG:11 is an 18-bit universal bus transceiver manufactured by Nexperia, formerly NXP Semiconductors. It features non-inverting 3-state outputs and operates within a supply voltage range of 1.2 V to 3.6 V. The device supports A-to-B and B-to-A data flow controlled by output enable (OEAB/OEBA), latch enable (LEAB/LEBA), and clock (CPAB/CPBA) inputs. It provides current drive of ±24 mA at VCC = 3.0 V and includes active bus hold circuitry for unused inputs.

Feature Summary

• Universal bus transceiver with D-type latches and flip-flops capable of transparent, latched, or clocked modes
• Active bus hold circuitry maintains valid logic levels on floating or unused data inputs
• Output drive capability designed for 50 Ω transmission lines at 85 °C
• Direct interface compatibility with TTL logic levels

Applications

• Bus-oriented applications requiring high-impedance states during power-up or power-down
• Systems utilizing 50 Ω transmission line termination
• Digital circuits interfacing between different voltage domains via direct TTL level compatibility

Procurement Notes

Verify the manufacturer designation as Nexperia due to the business separation from NXP in February 2017. Confirm the package type corresponds to TSSOP56 (SOT364-1) for the 'DGG' suffix. Ensure environmental compliance documentation aligns with current standards, as legacy NXP references may appear in older datasheets.

Selection Notes

Select this component for designs requiring 18-bit bidirectional data transfer with flexible control over data storage modes. The wide supply voltage range allows operation in low-voltage applications down to 1.2 V. Verify that the required propagation delay and maximum frequency specifications meet the system timing requirements under the specific operating load capacitance conditions.

Part Context

This part belongs to the 74ALVCH series of CMOS logic devices. The 'DGG' suffix indicates a plastic thin shrink small outline package with 56 leads and a body width of 6.1 mm. The ':11' suffix typically denotes a specific tape and reel packaging configuration used by Nexperia for automated assembly processes.

Replacement Considerations

Check for equivalent parts from other manufacturers such as Texas Instruments (SN74ALVCH16501) or Diodes Incorporated (PI74ALVCH16501A). Ensure pinout compatibility and verify that electrical characteristics like propagation delay and output drive strength match the original design constraints.