ISL3232E/ISL4221E/ISL4223E RS-232 Interface ICs

Renesas Electronics ISL3232E/ISL4221E/ISL4223E RS-232 Interface ICs are 2.7V to 5.5V powered RS-232 transmitters/receivers that meet ElA/TIA-232 and V.28/V.24 specifications, even at VCC = 3.0V. The devices provide ±15kV ESD protection (IEC61000-4-2 Air Gap and Human Body Model) on transmitter outputs and receiver inputs (RS-232 pins).

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Description Datasheet Availability Pricing (GBP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Mounting Style
Package/Case
Series
Function
Data Rate
Number of Drivers
Number of Receivers
Duplex
Supply Voltage - Max
Supply Voltage - Min
Operating Supply Current
Minimum Operating Temperature
Maximum Operating Temperature
ESD Protection
Packaging
Renesas / Intersil RS-232 Interface IC Pb-Free 3V RS-232 2TX/2RX -40+85 TRANSCEIVER, 20LD 5X5 QFN,
Datasheet
656In Stock
Min.: 1
Mult.: 1
Reel: 1,000

SMD/SMT QFN-20 ISL4223E Transceiver 250 kb/s 2 Driver 2 Receiver Full Duplex 5.5 V 2.7 V 150 nA - 40 C + 85 C 15 kV Reel, Cut Tape
Renesas / Intersil RS-232 Interface IC 3V RS-232 2TX/2RX TRANSC 20LD 5X5
Datasheet
1,425In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 250

SMD/SMT QFN-20 ISL4223E Transceiver 250 kb/s 2 Driver 2 Receiver Full Duplex 5.5 V 2.7 V 150 nA - 40 C + 85 C 15 kV Reel, Cut Tape, MouseReel

Renesas / Intersil RS-232 Interface IC 3V RS-232 2TX/2RX TRANSC 16LD 5X5
Datasheet
1,003In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-16 ISL3232E Transceiver 250 kb/s 2 Driver 2 Receiver Full Duplex 5.5 V 2.7 V 1 mA - 40 C + 85 C 15 kV Tube

Renesas / Intersil RS-232 Interface IC 3V RS-232 1TX/1RX -4 0+85 TRANS 16LD 5X5
Datasheet
1,620In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-16 ISL4221E Transceiver 250 kb/s 1 Driver 1 Receiver Full Duplex 5.5 V 2.7 V 1 mA - 40 C + 85 C 15 kV Tube

Renesas / Intersil RS-232 Interface IC 3V RS-232 1TX/1RX TRANSC 16LD 5X5
Datasheet
4,358In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 6,000

SMD/SMT QFN-16 ISL4221E Transceiver 250 kb/s 1 Driver 1 Receiver Full Duplex 5.5 V 2.7 V 1 mA - 40 C + 85 C 15 kV Reel, Cut Tape, MouseReel
Renesas / Intersil RS-232 Interface IC 3V RS-232 2TX/2RX TRANSC 20LD 5X5
Datasheet
353In Stock
600Expected 26/02/2026
Min.: 1
Mult.: 1

SMD/SMT QFN-20 ISL4223E Transceiver 250 kb/s 2 Driver 2 Receiver Full Duplex 5.5 V 2.7 V 150 nA - 40 C + 85 C 15 kV Tube

Renesas / Intersil RS-232 Interface IC 3V RS-232 2TX/2RX -4 0+85 TRANS 16LD 5X5
Datasheet
1,494On Order
MouseReel Available
Min.: 1
Mult.: 1
Reel: 250

SMD/SMT QFN-16 ISL3232E Transceiver 250 kb/s 2 Driver 2 Receiver Full Duplex 5.5 V 2.7 V 1 mA - 40 C + 85 C 15 kV Reel, Cut Tape, MouseReel

Renesas / Intersil RS-232 Interface IC 3V RS-232 2TX/2RX TRANSC 16LD 5X5
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 6,000
Mult.: 6,000
Reel: 6,000

SMD/SMT QFN-16 ISL3232E Transceiver 500 kb/s 1 Driver 2 Receiver 5.5 V 2.7 V 1 mA - 40 C + 85 C ESD Protection Reel
Renesas / Intersil RS-232 Interface IC 3V RS-232 2TX/2RX TRANSC 20LD 5X5
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 6,000
Mult.: 6,000
Reel: 6,000

SMD/SMT QFN-20 ISL4223E Transceiver 250 kb/s 2 Driver 2 Receiver 5.5 V 2.7 V 150 nA - 40 C + 85 C ESD Protection Reel