ZHX2022MV040THTR Zilog, ZHX2022MV040THTR Datasheet - Page 17

• 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

I/O and Software
Mode Switching
PS021802-1005
Table 7. Recommended Application Circuit Components
In the description, already different I/Os are mentioned. Different combinations are
tested and the function verified with the special drivers available from the I/O sup-
pliers. In special cases, refer to the I/O manual, the ZiLOG application notes, or
contact directly ZiLOG Sales, Marketing or Application.
The ZHX2022 is in the SIR mode after power on as a default mode; therefore, the
FIR data transfer rate has to be set by a programming sequence using the Txd
and SD inputs as described in the following sections or selected by setting the
Mode Pin. The Mode Pin can be used to statically set the mode (Mode Pin: LOW:
SIR, HIGH: 0.576 Mbit/s to 4.0 Mbit/s). If not used or in standby mode, the mode
input should float or should not be loaded with more than 50 pF. The low fre-
quency mode covers speeds up to 115.2 kbit/s. Signals with higher data rates
should be detected in the high frequency mode. Lower frequency data can also be
received in the high frequency mode but with reduced sensitivity. See Figure 4
and Table 8.
Component Recommended Value
C1
R1
R2
1.0
5 V supply voltage: 2
W resistor in series)
3.3 V supply voltage: no resistors necessary; the internal controller is
able to control the current
68 or 91
µ
F, Ceramic
Ω
, 0.125 W
Ω
, 0.25 W (recommended using two 1
FIR Transceiver
Ω
, 0.125
13