74ALVT16543 NRND

2.5 V/3.3 V ALVT 16-bit registered transceiver (3-state)

The 74ALVT16543 is a high-performance BiCMOS product designed for V_CC operation at 2.5 V or 3.3 V with I/O compatibility up to 5 V. The device can be used as two 8-bit transceivers or one 16-bit transceiver.

The 74ALVT16543 contains two sets of eight D-type latches, with separate control pins for each set. Using data flow from A to B as an example, when the A-to-B Enable (nEAB) input and the A-to-B Latch Enable (nLEAB) input are LOW, the A-to-B path is transparent.

A subsequent LOW-to-HIGH transition of the nLEAB signal puts the A data into the latches where it is stored and the B outputs no longer change with the A inputs. With nEAB and nOEAB both LOW, the 3-State B output buffers are active and display the data present at the outputs of the A latches.

Control of data flow from B to A is similar, but using the nEBA, nLEBA, and nOEBA inputs.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.

Not recommended for new designs (NRND).

Features and benefits

16-bit universal bus interface
5 V I/O Compatible
3-State buffers
Output capability: +64 mA/-32 mA
TTL input and output switching 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 3-State
Power-up reset
No bus current loading when output is tied to 5 V bus
Latch-up protection exceeds 500mA per JEDEC Std 17
ESD protection exceeds 2000 V per MIL STD 883 Method 3015 and 200 V per Machine Model

Documentation (4)

File name	Title	Type	Date
74ALVT16543	2.5 V/3.3 V ALVT 16-bit registered transceiver (3-state)	Data sheet	2004-09-13
alvt16543	alvt16543 IBIS model	IBIS model	2013-04-07
Nexperia_Selection_guide_2023	Nexperia Selection Guide 2023	Selection guide	2023-05-10
alvt16	alvt16 Spice model	SPICE model	2013-05-06

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Models

File name	Title	Type	Date
alvt16543	alvt16543 IBIS model	IBIS model	2013-04-07
alvt16	alvt16 Spice model	SPICE model	2013-05-06