Description:The ISL81334 and ISL41334 are two-port interface ICs in which each port can be independently configured as a single RS-485, RS-422 transceiver, or as a dual (2 Tx, 2 Rx) RS-232 transceiver. With both ports set to the same mode, two RS-485, RS-422 transceivers, or four RS-232 transceivers are available. If either port is in RS-232 mode, the onboard charge pump generates RS-232 compliant ±5V Tx output levels from a single VCC supply as low as 4.5V. Four small 0.1µF capacitors are required for the charge pump.
ALSO OPERATE WITH 1 TRANSMITTER AND 1 RECEIVER IN RS-485 MODE
Differential Output:
NO
Driver Number of Bits:
2
High Level Input Current-Max:
0.000002 A
Input Characteristics:
SCHMITT TRIGGER
Interface IC Type:
LINE TRANSCEIVER
Interface Standard:
EIA-232; EIA-422; EIA-485
JESD-30 Code:
S-XQCC-N40
JESD-609 Code:
e3
Length:
6 mm
Moisture Sensitivity Level:
3
Number of Functions:
2
Number of Terminals:
40
Operating Temperature-Max:
85 °C
Operating Temperature-Min:
-40 °C
Out Swing-Min:
2 V
Output Low Current-Max:
0.003 A
Output Polarity:
INVERTED
Package Body Material:
UNSPECIFIED
Package Code:
HVQCCN
Package Equivalence Code:
LCC40,.24SQ,20
Package Shape:
SQUARE
Package Style:
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Cel):
260
Receive Delay-Max:
120 ns
Receiver Number of Bits:
2
Seated Height-Max:
1 mm
Supply Current-Max:
7 mA
Supply Voltage-Max:
5.5 V
Supply Voltage-Min:
4.5 V
Supply Voltage-Nom:
5 V
Supply Voltage1-Max:
5.5 V
Supply Voltage1-Min:
4.5 V
Supply Voltage1-Nom:
5 V
Surface Mount:
YES
Technology:
BICMOS
Temperature Grade:
INDUSTRIAL
Terminal Finish:
Matte Tin (Sn) - annealed
Terminal Form:
NO LEAD
Terminal Pitch:
0.5 mm
Terminal Position:
QUAD
Time@Peak Reflow Temperature-Max (s):
30
Transmit Delay-Max:
2000 ns
Width:
6 mm
ISL41334IRZ-T7A Frequently Asked Questions (FAQs)
A good PCB layout for the ISL41334IRZ-T7A involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the traces connecting the IC to the capacitors and resistors. A 4-layer PCB with a dedicated ground plane is recommended.
To ensure proper powering and decoupling of the ISL41334IRZ-T7A, use a high-quality, low-ESR capacitor (e.g., 10uF ceramic) as close as possible to the VCC pin, and add a 1uF capacitor in parallel to filter out high-frequency noise. Additionally, use a 10kΩ resistor in series with the VCC pin to prevent voltage spikes.
The maximum allowed voltage on the input pins of the ISL41334IRZ-T7A is VCC + 0.3V. Exceeding this voltage may cause damage to the device.
To troubleshoot issues with the ISL41334IRZ-T7A, start by verifying the power supply voltage, checking for proper decoupling, and ensuring the input and output capacitors are properly connected. Use an oscilloscope to measure the output voltage and check for oscillations. Consult the datasheet and application notes for guidance on troubleshooting specific issues.
The ISL41334IRZ-T7A is rated for operation up to 125°C. However, the device's performance and reliability may degrade at high temperatures. Consult the datasheet and application notes for guidance on using the device in high-temperature environments.
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ISL41334IRZ-T7A Overview
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