SX1511BIULTRT Semtech, SX1511BIULTRT Datasheet - Page 17

• Manufacturer Part Number: SX1511BIULTRT
• Description: 8-chan GPIO With Independent I/O Voltages (SPI)
• Manufacturer: Semtech

ADVANCED COMMUNICATIONS & SENSING
This can save significant BOM cost in a final application where only a few signals need to be level-shifted (no
need for an additional external level shifter IC).
The minimum pulse width tLevelShiftMin which can be level shifted properly depends on VCCx and VDDM:
Input/Core/Output delays vs VCCx/VDDM are given in figures below.
Rev 3 – 9
th
Sept. 2010
tLevelShiftMin = Input Delay + Core Delay + Output Delay
Figure 12 – Level Shifting Example
SX1510/11B
VCC1
VCC2
IO4
IO0
1.2-3.6V
1.2-3.6V
17
World’s Lowest Voltage Level Shifting GPIO
1.2-5.5V
1.2-3.6V
SX1510B/SX1511B/SX1512B
with LED Driver and Keypad Engine
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