GPIOs & Voltage Level Translators

GPIO expanders

Do you need to protect CPU pins from the “outside world” with different I/O voltages?

Looking to ease routing on large and complex boards?

GPIO Expanders expand two wire I2C-bus to multiple input/output signals. NXP offers a wide range of GPIOs: 4-, 8-, 16-, 24-, 40-bit I/O as well as a variety of I/O types: open-drain, totem pole, with integrated pull up/pull down resistors. They also do this with industry-leading functionality, including agile I/O.

GPIO benefits run the gamut

The ultra-low voltage GPIO complements system management strategy toward the next-generation supply voltage standards to 0.8 V interface. With a wide range of selections from 4-bit to 40-bit as well as all kind of packages choices, NXP GPIOs are best in class. For example, there’s a new X2QFN super thin Land Grid Array (LGA) packages are 0.35 mm thick—the thickest GPIO package NXP has ever offered. Also, GPIO integrated level shift capabilities eliminate extra components by interfacing directly between next-generation CPU and older peripherals.

Port flexibility sets NXP GPIOs apart

One of the main features that sets NXP GPIOs apart are the flexibility of ports. GPIO output ports with software selectable output drive strength of 25, 50, 75 or 100% to improve rise and fall times along with a configured output which is either push-pull or open-drain. Plus, these ports offer noise reduction as well as match impedance. What’s more, GPIO input ports latch and save input transitions until processed by selecting floating input (high-impedance) or pull-up/pull-down resistor enablement and eliminates external resistors to reduce BOMs. Lastly, agile interrupt ports mask inputs from triggering interrupts, identify which input triggered an interrupt via I2C and reduce processor interrupt traffic to improve service response times.

Key GPIO applications:

  • Computing (servers, RAID systems, tablets, etc.) IoT
  • Smart devices (smartphones, mobile devices, etc.)
  • Industrial controls
  • Building/home automation
  • Networking
  • Medical equipment
  • Gaming
  • Consumer devices
  • Test and measurement instrumentation
  • Automotive body module controllers

 

GPIO Expander Families Part Series
I2C GPIO Expanders
(Quasi Output Structure)
GPIO Expanders Family
with Agile I/O

 

Voltage level translators

Do you have multiple I/O voltage or voltage rails in your system?

How many different voltages do you need to convert and what voltage do you need to convert?

Do you need to isolate system peripherals or multiple loads on the bus?

NXP’s voltage level translators serve as an interface between different supply and input/output voltage levels. These bi-directional level shifter and translator circuits include a range from single-bit to 32-bit widths. Voltage level shifting between host processor’s I2C-bus and peripheral devices when there is a mismatch of supply voltages. Often VLTs are used when additional drive is needed or to isolate two sections of the bus loading.
 

Key VLT applications:

  • I2C buffering
  • Long cable
  • Hot-swap
  • Control interfaces
  • Control interfaces with active drive
  • Support for GTL levels on microprocessors

 

Wide Selection of Voltage Level Translators:

Wide Selection of Voltage Level Translators

 

Level Shifter Families Part Series
Level Translators with Capacitance Isolation - PCA Family
Passive Level Translators - NTV Family
Application Specific Voltage Translators
Level Translators NTB Family
Level Translators - GTL Family
NTS part to read Level Translators - NTS Family

 

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