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
Input Characteristics:
SCHMITT TRIGGER
Interface IC Type:
LINE TRANSCEIVER
Interface Standard:
EIA-232; EIA-422; EIA-485
JESD-30 Code:
R-PDSO-G28
JESD-609 Code:
e3
Length:
17.9 mm
Moisture Sensitivity Level:
3
Number of Functions:
2
Number of Terminals:
28
Operating Temperature-Max:
85 °C
Operating Temperature-Min:
-40 °C
Package Body Material:
PLASTIC/EPOXY
Package Code:
SOP
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE
Peak Reflow Temperature (Cel):
260
Receive Delay-Max:
120 ns
Receiver Number of Bits:
2
Seated Height-Max:
2.65 mm
Supply Voltage-Max:
5.5 V
Supply Voltage-Min:
4.5 V
Supply Voltage-Nom:
5 V
Surface Mount:
YES
Technology:
BICMOS
Temperature Grade:
INDUSTRIAL
Terminal Finish:
Matte Tin (Sn) - annealed
Terminal Form:
GULL WING
Terminal Pitch:
1.27 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
30
Transmit Delay-Max:
2000 ns
Width:
7.5 mm
ISL81334IBZ Frequently Asked Questions (FAQs)
Renesas provides a recommended PCB layout guide in the ISL81334IBZ evaluation board user manual, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize noise.
The selection of input and output capacitors depends on the specific requirements of your application, such as output voltage, current, and ripple requirements. Renesas provides guidelines for capacitor selection in the datasheet, but it's recommended to consult with a capacitor manufacturer or a Renesas FAE for specific recommendations.
While the datasheet specifies an operating temperature range of -40°C to +125°C, the maximum ambient temperature range for reliable operation depends on the specific application and cooling conditions. It's recommended to consult with a Renesas FAE or perform thermal simulations to determine the maximum ambient temperature range for your specific application.
The ISL81334IBZ has built-in overcurrent protection and short-circuit protection features. To implement these features, you need to connect the OCP pin to a resistor and capacitor network, and the SCP pin to a resistor network, as described in the datasheet. You may also need to add external components, such as fuses or PTC resistors, depending on your specific application requirements.
The recommended startup sequence for the ISL81334IBZ is to first apply the input voltage, then the enable signal (EN pin), and finally the clock signal (CLK pin). This sequence ensures that the device powers up correctly and minimizes the risk of latch-up or other startup issues.
Trust Checks
This model has been built in collaboration with the manufacturer.
Manufacturer Collaborated
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
ISL81334IBZ Overview
Use the download button to access the ISL81334IBZ schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like ISL81,
or try a keyword search, such as Line Driver or Receivers
