1. General description
The 74ALVT16373 is a 16-bit D-type transparent latch with 3-state outputs. The device can be
used as two 8-bit transparent latches or a single 16-bit transparent latch. The device features
two latch enables (1LE and 2LE) and two output enables (1OE and 2OE), each controlling
8-bits. When nLE is HIGH, data at the inputs enter the latches. In this condition the latches are
transparent, a latch output will change each time its corresponding D-input changes. When nLE is
LOW the latches store the information that was present at the inputs a set-up time preceding the
HIGH-to-LOW transition of nLE. A HIGH on nOE causes the outputs to assume a high-impedance
OFF-state. Operation of the nOE input does not affect the state of the latches. Bus hold data inputs
eliminate the need for external pull-up resistors to define unused inputs
2. Features and benefits
• Wide supply voltage range from 2.3 to 3.6 V
• Overvoltage tolerant inputs to 5.5 V
• BiCMOS high speed and output drive
• 16-bit transparent latch
• 5 V I/O compatible
• 3-state buffers
• Output capability: +64 mA/–32 mA
• Direct interface with TTL levels
• Input and output interface capability to systems at 5 V supply
• Bus-hold data inputs eliminate the need for external pull-up resistors to hold unused inputs
• Live insertion/extraction permitted
• Power-up reset
• Power-up 3-State
• No bus current loading when output is tied to 5 V bus
• IOFF circuitry provides partial Power-down mode operation
• Latch-up performance exceeds 500 mA per JESD 78 Class II Level B
• ESD protection:
• MIL STD 883 method 3015: exceeds 2000 V
• MM exceeds 200 V
• Specified from -40 °C to 85 °C