
11
Specification
Absolute Maximum Ratings
Exceeding the maximum rating can result in device damage. Operation of the device outside the operating limits is
not implied.
Supply voltage
Input voltage at any pin (ref V
= 0V)
Sink/source current (supply pins)
(other pins)
Total device dissipation @ T
AMB
25°C
Derating
Operating temperature range:
FX489DW/P
-0.3 to 7.0V
-0.3 to (V
DD
+ 0.3V)
+/- 30mA
+/- 20mA
800mW Max.
10mW/°C
-40°C to +85°C
Storage temperature range:
FX489DW/P
-40°C to +85°C
Operating Limits
All device characteristics are measured under the following conditions unless otherwise specified:
V
= 5.0V, T
= 25°C. Xtal/Clock Frequency = 4.096MHz. Data Rate = 8000 bits/sec.
Noise Bandwidth = Bit Rate
Characteristics
See Note
Static Values
Supply Voltage (V
DD
)
Supply Current
Tx PS Rx PS
1
1
0
1
1
0
0
0
Input Logic Levels
Logic “1”
Logic “0”
Logic Input Current
Logic “1”O(jiān)utput Level at IOH = -120μA
Logic “0”O(jiān)utput Level at IOL = 120μA
Rx, Tx Data Rate
Transmit Parameters
Tx OUT, Output Impedance
Tx OUT, Level
Tx Data Delay (BT = 0.3)
(BT = 0.5)
Tx PS to Output-Stable Time
Receive Parameters
Rx Amplifier -
Input Impedance
Output Impedance
Voltage Gain
Rx Filter Signal Input Level
Rx Time Delay
On-Chip Xtal Oscillator
R
IN
R
Voltage Gain
Xtal/Clock Frequency
“High” Pulse Width
“Low” Pulse Width
Min.
Typ.
Max.
Unit
4.5
5.0
5.5
V
1
-
-
-
-
1.0
3.0
4.0
7.0
-
-
-
-
mA
mA
mA
mA
3.5
-
-5.0
4.6
-
4000
-
-
-
-
-
-
V
V
μA
V
V
1.5
5.0
-
0.4
19200
2
bits/sec
3
4
5
5
6
-
1.0
1.0
2.0
1.5
4.0
-
k
V p-p
bit-periods
bit-periods
bit-periods
0.8
-
-
-
1.2
2.5
2.0
-
1.0
-
-
0.7
-
-
-
-
-
M
k
dB
V p-p
bit-periods
7
10.0
50.0
1.0
-
8
9
1.3
3.0
10.0
5.0
-
1.0
80.0
80.0
-
-
-
M
k
dB
MHz
ns
ns
15.0
-
5.0
-
-
15.0
–
-
-
10
10
Notes
1. Not including current drawn from the FX489 pins by external circuitry. See Absolute Maximum Ratings.
2. For V
in the range V
to V
.
3
For a load of 10k
or greater. Tx PS input at logic “0”; Tx Enable = “1”.
4. Data pattern of “1111000011110000 ..”
5. Measured between the rising edge of ‘Tx Clock’ and the centre of the corresponding bit at ‘Tx Out.’
6. Time between the falling edge of ‘Tx PS’ and the ‘Tx Out’ voltage stabilising to normal output levels.
7. For a load of 10k
or greater. Rx PS input at logic “0”.
8. For optimum performance, measured at the ‘Rx Feedback’ pin for a “1111000011110000 ...” pattern.
9. Measured between the centre of bit at ‘Rx Signal In’ and corresponding rising edge of the ‘Rx Clock’.
10. Timing for an external clock input to the Xtal/Clock pin.