STMicroelectronics 74ALVCH16373TTR: 16-Bit Transparent Latch

The 74ALVCH16373TTR from STMicroelectronics is a high-speed, low-voltage 16-bit transparent D-type latch with 3-state outputs. This integrated circuit is designed for 1.65V to 3.6V VCC operation. It is part of the advanced high-speed CMOS family which ensures robust performance and is suitable for a wide range of applications that require the temporary storage of data.

Featuring a 16-bit bus interface, the 74ALVCH16373TTR provides high-speed latching with the convenience of 3-state outputs for connection to a bus-oriented system. The dual enable (nOE) function allows each half of the device to be operated independently, which is particularly useful for multiplexing and demultiplexing applications or for using the device as two 8-bit latches.

The transparent latches are designed such that when the latch enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is taken low, the Q outputs are latched at the levels set up at the D inputs. A buffered output enable (OE) input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or a high-impedance state. In the latter state, the outputs neither load the bus nor drive it, effectively isolating the bus.

Key features of the 74ALVCH16373TTR include:

• High-speed operation: tPD = 3.8 ns (max) at 3.3V
• Low power dissipation: ICC = 4 µA (max) at TA = 25°C
• Power-down protection on inputs and outputs
• Support for live insertion and withdrawal (partial power-down)
• Bus hold on data inputs eliminates the need for external pull-up/pull-down resistors
• Latch-up performance exceeds 300 mA per JESD 78 Class II Level B
• ESD protection exceeds JESD 22

The device is offered in a TSSOP48 package, which minimizes space on the PCB while allowing for a high level of integration. The 74ALVCH16373TTR is an ideal choice for a variety of applications, including data storage, communication systems, and complex computing tasks where data integrity and performance are critical.

With its robust feature set and STMicroelectronics' commitment to quality, the 74ALVCH16373TTR is a reliable and efficient solution for designers seeking to improve their digital systems.