Pin Description

Pin Name

I/O

Internal

Connection

Description

NC

¾¾

No connection for HT6P20B2T3/HT6P20D2T3

D0~D1

I

CMOS in Pull-high

Data input and transmission enable - active low. Can be externally set

to VSS or left open.

D2~D3

I

CMOS in Pull-high

Data input and transmission enable - active low. Can be externally set

to VSS or left open for the HT6P20D2T3.

D4

I

CMOS in Pull-high

Data input and transmission enable - active low. Can be externally set

to VSS or left open for the HT6P20F2T3.

EN

I

RF enable pin

RF enable - active high; When set low, the RF is enabled by the data

input.

VDD

¾¾

Positive power supply

AVDD

¾¾

RF positive power supply

VSS

¾¾

Negative power supply, ground

AVSS

¾¾

RF negative power supply, ground

PAOUT

O

Power amplify output L/C matching circuit

XIN

O

Crystal Fs input

Crystal value is 9.84375MHz at 315MHz and 13.56MHz at 433.92MHz

XOUT

I

Crystal Fs output

DOUT

O

CMOS OUT

Data serial transmission output

Approximate Internal Connection Circuits

Absolute Maximum Ratings

Storage Temperature .................................................................................................

-50°Cto125°C

Operating Temperature................................................................................................

-40°Cto85°C

Note: These are stress ratings only. Stresses exceeding the range specified under

²Absolute Maximum Rat-

ings

² may cause substantial damage to the device. Functional operation of this device at other condi-

tions beyond those listed in the specification is not implied and prolonged exposure to extreme

conditions may affect device reliability.

HT6P20B2T3/D2T3/F2T3

2

Rev. 1.00

3

September 13, 2010

D 0 ~ D 5 P i n s

D O U T P i n