ntb0102 NXP Semiconductors, ntb0102 Datasheet - Page 16

• Manufacturer Part Number: ntb0102
• Description: Ntb0102 Dual Supply Translating Transceiver; Auto Direction Sensing; 3-state
• Manufacturer: NXP Semiconductors

NXP Semiconductors
NTB0102
Product data sheet
Fig 10. Architecture of NTB0102 I/O cell (one channel)
13.2 Architecture
The architecture of the NTB0102 is shown in
extra input signal to control the direction of data flow from A to B or from B to A. In a static
state, the output drivers of the NTB0102 can maintain a defined output level, but the
output architecture is designed to be weak, so that they can be overdriven by an external
driver when data on the bus starts flowing in the opposite direction. The output of one-shot
circuits detect rising or falling edges on the A or B ports. During a rising edge, the
one-shot circuits turn on the PMOS transistors (T1, T3) for a short duration, accelerating
the LOW-to-HIGH transition. Similarly, during a falling edge, the one-shot circuits turn on
the NMOS transistors (T2, T4) for a short duration, accelerating the HIGH-to-LOW
transition. During output transitions the typical output impedance is 70 Ω at V
to 1.8 V, 50 Ω at V
A
V
CC(A)
All information provided in this document is subject to legal disclaimers.
Dual supply translating transceiver; auto direction sensing; 3-state
CCO
T3
T4
4 kΩ
Rev. 1 — 22 September 2010
= 1.8 V to 3.3 V and 40 Ω at V
SHOT
SHOT
ONE
ONE
SHOT
SHOT
ONE
ONE
4 kΩ
T1
T2
Figure
V
CC(B)
001aal921
10. The device does not require an
CCO
B
= 3.3 V to 5.0 V.
NTB0102
© NXP B.V. 2010. All rights reserved.
CCO
= 1.2 V
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