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280Mb/s Bi-directional Level Translator for Push-Pull Applications

2014-01-0006

PT0475-1

02/18/14

1

PI4ULS3V502

Features

 0.85V to 2.7V on A Port and 1.35V to 3.6V on B

Port

 VCCA may be greater than, equal to, or less than

VCCB

 High-Speed with 280 Mb/s Guaranteed Date Rate

 30 pF Capacitive Drive Capability

 Low Bit-to-Bit Skew

 Overvoltage Tolerant Enable and I/O Pins

 Non-preferential Power-Up Sequencing

 Power-Off Protection

 Package: UDFN1.2x1.6-8L

Applications

 Mobile Phones, PDAs

 Other Portable Devices

Pin Configuration

UDFN1.2*1.6-8L(Top View)

Description

The PI4ULS3V502 is a 2-bit configurable dual-

supply autosensing bidirectional level translator that

does not require a direction control pin. The B and A

ports are designed to track two different power supply

rails, VCCB and VCCA respectively.

The PI4ULS3V502 offers the feature that the values

of the VCCB and VCCA supplies are independent.

Design flexibility is maximized because VCCA can be

set to a value either greater than or less than the VCCB

supply.

The

PI4ULS3V502

has

high

output

current

capability, which allows the translator to drive high

capacitive loads such as most high frequency EMI filters.

Another feature of the PI4ULS3V502 is that each An

and Bn channel can function as either an input or an

output.

An Output Enable (EN) input is available to reduce

the power consumption. The EN pin can be used to

disable both I/O ports by putting them in 3-state which

significantly reduces the supply current.

PI4ULS3V502 is 2 kV System-Level ESD Capable.

Pin Description

Pin

No.

Pin

Name

Type

Description

1

Power

A-port supply voltage.0.85V ≤

2

A1

I/O

Input/output A. Referenced to

3

A2

I/O

Input/output A. Referenced to

4

GND

GND

Ground.

5

EN

Input

Output enable (active High). Pull

EN low to place all outputs in 3-

state mode.

6

B2

I/O

7

B1

I/O

8

Power

B-port supply voltage. 1.35 V ≤