74ALVCH16841DGG,11

Overview

The Nexperia 74ALVCH16841DGG,11 is a 20-bit bus interface D-type latch featuring two independent 10-bit registers with 3-state outputs. It operates within a supply voltage range of 1.2 V to 3.6 V and supports direct TTL level interfacing. The device provides a current drive of ±24 mA at VCC = 3.0 V and includes active bus hold circuitry for all data inputs. Propagation delay from nDn to nQn is typically 2.4 ns at 3.0 V to 3.6 V. It is housed in a TSSOP56 (SOT364-1) package and functions reliably across an ambient temperature range of -40 °C to +85 °C.

Feature Summary

• Features MULTIBYTE™ flow-through standard pin-out architecture for simplified PCB layout.
• Includes low inductance multiple VCC and GND pins to minimize noise and ground bounce.
• Provides 3-state non-inverting outputs suitable for bus-oriented applications.
• Complies with JEDEC standards JESD8-5 and JESD8B/JESD36 for specified voltage ranges.

Applications

• Bus oriented applications requiring high-density data storage
• Systems utilizing 50 Ω transmission lines at elevated temperatures
• Mixed voltage environments requiring direct TTL level interfacing

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component when designing systems requiring 20-bit parallel data latching with bus-compatible outputs. Ensure the design accommodates the TSSOP56 package dimensions and thermal requirements. Confirm that the application voltage falls within the 1.2 V to 3.6 V range to maintain specified performance characteristics and ESD protection levels.

Part Context

This part belongs to the 74ALVCH series of advanced low-voltage CMOS logic devices. It is functionally similar to other 20-bit latches in the family but specifically optimized for bus interfaces. The DGG variant denotes the plastic thin shrink small outline package with 56 leads, distinguishing it from other package options available in the broader 74ALVCH product line.

Replacement Considerations

Direct substitutes include other 20-bit bus interface D-type latches from the 74ALVCH series with compatible pinouts and electrical specifications. Verify package compatibility and operating voltage ranges before substitution.

FAQ

How does the bus hold feature benefit unused inputs?

The active bus hold circuitry holds unused or floating data inputs at a valid logic level, eliminating the need for external pull-up or pull-down resistors.

What is the effect of the nOE input on the flip-flop state?

Operation of the nOE (output enable) input does not affect the state of the flip-flops; it only controls whether the data appears at the outputs or if they are in a high-impedance OFF state.