ZHX2022MV040THTR Zilog, ZHX2022MV040THTR Datasheet - Page 18

• Manufacturer Part Number: ZHX2022MV040THTR
• Description: Fiber Optic Transmitters, Receivers, Transceivers FIR IrDA 4 MBITS
• Manufacturer: Zilog

Specifications of ZHX2022MV040THTR

• Product: Transceiver
• Data Rate: 115.2 Kbps
• Wavelength: 900 nm
• Maximum Rise Time: 40 ns
• Maximum Fall Time: 40 ns
• Pulse Width Distortion: 1.8 us
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Package / Case: UltraSlim
• Idle Current, Typ @ 25° C: 2mA
• Link Range, Low Power: -
• Operating Temperature: -25°C ~ 85°C
• Orientation: Top View
• Shutdown: *
• Size: 9.7mm x 4.7mm x 4mm
• Standards: IrPHY 1.4
• Supply Voltage: 2.7 V ~ 5.5 V
• Lead Free Status: Contains lead
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PS021802-1005
high
low
low
low
low
low
SD
Setting to the High Bandwidth Mode (0.576 Mbit/s to 4.0 Mbit/s)
high > 80
high
Txd
low
low
low
x
Figure 4. Mode Switching Timing Diagram
Table 8. Truth Table
To switch the transceivers from low frequency mode to the high frequency mode
and vice versa, the programming sequences described in the following sections
are required.
1. Set SD input to logic “HIGH”.
2. Set Txd input to logic “HIGH”. Wait t
3. Set SD to logic “LOW” (this negative edge latches state of Txd, which
µ
determines the speed setting).
s
< Max. Detection Threshold Irradiance
> Max. Detection Threshold Irradiance
> Min. Detection Threshold Irradiance
Optical Input Irradiance mW/m
Inputs
< 4
x
x
x
s
2
> 200 ns.
(500 k
weakly pulled
low (active)
Ω
Rxd
high
high
high
x
to VCC1)
Outputs
FIR Transceiver
Transmitter
I
0
0
0
0
0
e
14