NVT2004TL datasheet(1/33 Pages) PHILIPS

Teilenummer	NVT2004TL

Bauteilbeschribung	Bidirectional voltage-level translator for open-drain and push-pull applications

PDF	33 Pages

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Hersteller	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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1.

General description

The NVT2003/04/06 is a family of bidirectional voltage level translators operational from

1.0 V to 3.6 V (Vref(A)) and 1.8 V to 5.5 V (Vref(B)), which allow bidirectional voltage

translations between 1.0 V and 5 V without the need for a direction pin in open-drain or

push-pull applications. Bit widths ranging from 3-bit to 6-bit are offered for level translation

application with transmission speeds < 33 MHz for an open-drain system with a 50 pF

capacitance and a pull-up of 197

.

When the An or Bn port is LOW, the clamp is in the ON-state and a low resistance

connection exists between the An and Bn ports. The low ON-state resistance (Ron) of the

switch allows connections to be made with minimal propagation delay. Assuming the

higher voltage is on the Bn port when the Bn port is HIGH, the voltage on the An port is

limited to the voltage set by VREFA. When the An port is HIGH, the Bn port is pulled to the

drain pull-up supply voltage (Vpu(D)) by the pull-up resistors. This functionality allows a

seamless translation between higher and lower voltages selected by the user without the

need for directional control.

When EN is HIGH, the translator switch is on, and the An I/O are connected to the Bn I/O,

respectively, allowing bidirectional data flow between ports. When EN is LOW, the

translator switch is off, and a high-impedance state exists between ports. The EN input

circuit is designed to be supplied by Vref(B). To ensure the high-impedance state during

power-up or power-down, EN must be LOW.

All channels have the same electrical characteristics and there is minimal deviation from

one output to another in voltage or propagation delay. This is a benefit over discrete

transistor voltage translation solutions, since the fabrication of the switch is symmetrical.

The translator provides excellent ESD protection to lower voltage devices, and at the

same time protects less ESD-resistant devices.

2.

Features and benefits

 Provides bidirectional voltage translation with no direction pin

 Less than 1.5 ns maximum propagation delay

 Allows voltage level translation between:

 1.0 V Vref(A) and 1.8 V, 2.5 V, 3.3 V or 5 V Vref(B)

 1.2 V Vref(A) and 1.8 V, 2.5 V, 3.3 V or 5 V Vref(B)

 1.8 V Vref(A) and 3.3 V or 5 V Vref(B)

 2.5 V Vref(A) and 5 V Vref(B)

 3.3 V Vref(A) and 5 V Vref(B)

NVT2003/04/06

Bidirectional voltage-level translator for open-drain and

push-pull applications

Rev. 5 — 19 February 2014

Product data sheet

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