XRT8001

5

Rev. 1.01

Symbol

Parameter

Min.

Typ.

Max. Units

Condition

V

IL

Input Low Level

0.8

V

V

IH

Input High Level

2.0

V

V

OL

Output Low Level (CLK1, CLK2)

0.4

V

I

V

OH

Output High Level (CLK1, CLK2)

2.4

V

I

V

OL

Output Low Level (LOCKDET, SYNC)

0.4

V

I

V

OH

Output High Level (LOCKDET, SYNC)

2.4

V

I

I

IL

Input Low Current (CSB, MSB)

-150

mA

I

IH

Input High Current (CSB, MSB)

10

mA

V

I

IL

Input Low Current (except CSB, MSB)

-10

mA

I

IH

Input High Current (except CSB, MSB)

10

mA

V

I

CC

Operating Current

11

30

mA

3.3V, No Load, CLk1, CLK2 = 8 x 2.048MHz

20

35

mA

5V, No Load, CLk1, CLK2 = 8 x 2.048MHz

R

IN

Internal Pull-up Resistance (CSB, MSB)

50

100

150

kW

ABSOLUTE MAXIMUM RATINGS

Supply Range ................................................ 7V

Voltage at any Pin ........... GND -0.3V to Vcc+0.3V

Operating Temperature................. - 40°C to +85°C

Storage Temperature ................... - 40°C to +85°C

Package Dissipation ............................... 500mW

Note:

1. 5V tolerant input considerations when operating from 3.3V:

When the XRT8001 is powered at 3.3V, it can tolerate 5V-level signals via its inputs. However, the user should be aware the XRT8001

contains a “Factory-Test” Mode. This mode is enabled whenever the MSB (Master-Slave select) input pin is pulled to about 2V above

VDD.

Therefore, if the user is powering the XRT8001 at 3.3V but is applying a 5.25V signal to the MSB input pin, then it is possible that the

XRT8001 could be configured to operate in this “Factory-Test” Mode. Since all “Factory-Test” Mode registers are reset to “0”, upon

chip power, this should not be a problem for the user.

However, if the user performs write operations to “non-defined” address locations within the XRT8001, then the user may observe strange

operation from the XRT8001. The user must make sure that when the Microcontroller performs WRITE operations to the XRT8001, it

is only performing these WRITE operations to the Address Locations defined in the XRT8001 Data Sheet.