Datasheet
NTSX2102 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 2 — 11 February 2013 11 of 20
NXP Semiconductors
NTSX2102
Dual supply translating transceiver; open drain; auto direction sensing
14. Application information
14.1 Applications
The NTSX2102 can be used in point-to-point applications to interface between devices or
systems operating at different supply voltages. The device is targeted at I
2
C or 1-wire
buses which use open-drain drivers.
14.2 Architecture
The architecture of the NTSX2102 is shown in Figure 9. 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 NTSX2102
is a "switch" type voltage translator, it employs two key circuits to enable voltage
translation:
1. Two pass-gate transistors (N-channel) that tie the ports together.
2. An output edge-rate accelerator that detects and accelerates rising and falling edges
on the I/O pins (see Figure 10
).
Fig 8. Typical voltage level-translation circuit
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Fig 9. Architecture of NTSX2102 I/O cell (one channel)
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