NTS0102

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© NXP B.V. 2011. All rights reserved.

Product data sheet

Rev. 3 — 17 November 2011

15 of 27

NXP Semiconductors

NTS0102

Dual supply translating transceiver; open drain; auto direction sensing

14. Application information

14.1 Applications

Voltage level-translation applications. The NTS0102 can be used in point-to-point

applications to interface between devices or systems operating at different supply

may also be used in applications where push-pull drivers are connected to the ports,

however the NTB0102 may be more suitable.

14.2 Architecture

The architecture of the NTS0102 is shown in Figure 11. The device does not require an

extra input signal to control the direction of data flow from A to B or B to A.

The NTS0102 is a "switch" type voltage translator, it employs two key circuits to enable

voltage translation:

1. A pass-gate transistor (N-channel) that ties the ports together.

2. An output edge-rate accelerator that detects and accelerates rising edges on the I/O

pins.

Fig 10. Typical operating circuit

001aam491

1.8 V

SYSTEM

CONTROLLER

3.3 V

SYSTEM

1.8 V

3.3 V

0.1

μF

0.1

μF

1

μF

OE

A1

DATA

DATA

NTS0102

A2

B1

B2

Fig 11. Architecture of NTS0102 I/O cell (one channel)

001aal965

AB

10 k

Ω

10 k

Ω

T1

T3

T2

ONE

SHOT

ONE

SHOT

GATE BIAS