Microchip Technology MCP3421DM-WS Data Sheet

© 2009 Microchip Technology Inc.

 

DS39632E-page 383

Operating Conditions: -40°C < T

A

 < +85°C (unless otherwise stated). 

D313

V

USB

USB Voltage

3.0

—

3.6

V

Voltage on pin must be in this 
range for proper USB 
operation

D314

I

IL

Input Leakage on D+ and D- 
pins

—

—

±1

μA

V

SS

 

≤ V

PIN

 

≤ V

DD

;

pin at high-impedance

D315

V

ILUSB

Input Low Voltage for USB 
Buffer

—

—

0.8

V

For  V

USB

 range

D316

V

IHUSB

Input High Voltage for USB 
Buffer

2.0

—

—

V

For V

USB

 range

D317

V

CRS

Crossover Voltage

1.3

2.0

V

Voltage range for D+ and D- 
crossover to occur

D318

V

DIFS

Differential Input Sensitivity

—

—

0.2

V

The difference between D+ 
and D- must exceed this value 
while V

CM

 is met

D319

V

CM

Differential Common Mode 
Range

0.8

—

2.5

V

D320

Z

OUT

Driver Output Impedance

28

—

44

Ω

D321

V

OL

Voltage Output Low

0.0

—

0.3

V

1.5 k

Ω load connected to 3.6V

D322

V

OH

Voltage Output High

2.8

—

3.6

V

15 k

Ω load connected to 

ground

Operating Conditions: -40°C < T

A

 < +85°C (unless otherwise stated). 

D323

V

USBANA

Regulator Output Voltage

3.0

—

3.6

V

V

DD

 > 4.0V

D324

C

USB

External Filter Capacitor 
Value (V

USB

 to V

SS

)

0.22

0.47

12

μF

Ceramic or other low-ESR 
capacitor recommended

If device V

DD

 is less than 4.0V, the internal USB voltage regulator should be disabled and an external 

3.0-3.6V supply should be provided on V

USB

 if the USB module is used.

This is a recommended maximum for start-up time and in-rush considerations. When the USB regulator is 
disabled, there is no maximum.