NTS0104_15 Datasheet, PDF (15/25 Pages) NXP Semiconductors – Dual supply translating transceiver; open drain; auto direction sensing

NXP Semiconductors
NTS0104
Dual supply translating transceiver; open drain; auto direction sensing
14. Application information
14.1 Applications
Voltage level-translation applications. The NTS0104 can be used in point-to-point
applications to interface between devices or systems operating at different supply
voltages. The device is primarily targeted at I²C or 1-wire which use open-drain drivers, it
may also be used in applications where push-pull drivers are connected to the ports,
however the NTB0104 may be more suitable.
1.8 V
0.1 μF
1.8 V
SYSTEM
CONTROLLER
DATA
V_CC(A) V_CC(B)
OE
NTS0104
A1
B1
A2
B2
A3
B3
A4
B4
GND
3.3 V
SYSTEM
DATA
Fig 10. Typical operating circuit
0.1 μF
3.3 V
1 μF
001aan115
14.2 Architecture
The architecture of the NTS0104 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.
V_CC(A)
V_CC(B)
T1
ONE
SHOT
10 kΩ
T2
ONE
SHOT
10 kΩ
GATE BIAS
T3
A
Fig 11. Architecture of NTS0104 I/O cell (one channel)
B
001aal965
The NTS0104 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.
NTS0104
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 3 January 2012
© NXP B.V. 2012. All rights reserved.
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