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ISL3332IAZ

Public Made by Adom

by adom

RENESAS Pre-ordered Chips, SSOP-28-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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ISL3332IAZ

RENESAS · Pre-ordered Chips · SSOP-28-208mil

ISL3332IAZ from RENESAS, in a SSOP-28-208mil. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 C1+ passive Voltage doubler external capacitor connection (RS-232); not needed if both ports are in RS-485 mode.
2 C1- passive Voltage doubler external capacitor connection (RS-232); not needed if both ports are in RS-485 mode.
3 V+ power_out Internally generated positive RS-232 transmitter supply (+5.5V); C3 not needed if both ports are in RS-485 mode.
4 A1 input Port 1 receiver input with 15kV ESD protection; RS-232 receiver input or RS-485 inverting receiver input.
5 B1 input Port 1 receiver input with 15kV ESD protection; RS-232 receiver input or RS-485 noninverting receiver input.
6 Y1 output Port 1 driver output with 15kV ESD protection; RS-232 driver output or RS-485 inverting driver output.
7 Z1 output Port 1 driver output with 15kV ESD protection; RS-232 driver output or RS-485 noninverting driver output.
8 SEL1 input Port 1 interface mode select: high selects RS-485 mode, low selects RS-232 mode.
9 SEL2 input Port 2 interface mode select: high selects RS-485 mode, low selects RS-232 mode.
10 Z2 output Port 2 driver output with 15kV ESD protection; RS-232 driver output or RS-485 noninverting driver output.
11 Y2 output Port 2 driver output with 15kV ESD protection; RS-232 driver output or RS-485 inverting driver output.
12 B2 input Port 2 receiver input with 15kV ESD protection; RS-232 receiver input or RS-485 noninverting receiver input.
13 A2 input Port 2 receiver input with 15kV ESD protection; RS-232 receiver input or RS-485 inverting receiver input.
14 GND power_in Ground connection.
15 V- power_out Internally generated negative RS-232 transmitter supply (-5.5V); C4 not needed if both ports are in RS-485 mode.
16 RB2 output Port 2 RS-232 receiver output; in RS-485 mode not used and internally pulled high.
17 RA2 output Port 2 receiver output; RS-232 receiver output or RS-485 receiver output (high if inputs open or shorted, full fail-safe).
18 DZ2/DE2 input Port 2 RS-232 driver input DZ, or RS-485 driver output enable DE (high enables Y, Z; internally pulled high in RS-485 mode).
19 DY2 input Port 2 driver input; low forces Y high (RS-232) and a high forces Y low.
20 ON/OFF input A low disables all outputs and charge pumps for low power shutdown; internally pulled high, high for normal operation.
21 LB input Enables loopback mode when low; internally pulled high.
22 DY1 input Port 1 driver input; low forces Y high (RS-232) and a high forces Y low.
23 DZ1/DE1 input Port 1 RS-232 driver input DZ, or RS-485 driver output enable DE (high enables Y, Z; internally pulled high in RS-485 mode).
24 RA1 output Port 1 receiver output; RS-232 receiver output or RS-485 receiver output (high if inputs open or shorted, full fail-safe).
25 RB1 output Port 1 RS-232 receiver output; in RS-485 mode not used and internally pulled high.
26 VCC power_in System power supply input (3.3V).
27 C2- passive Voltage inverter external capacitor connection (RS-232); not needed if both ports are in RS-485 mode.
28 C2+ passive Voltage inverter external capacitor connection (RS-232); not needed if both ports are in RS-485 mode.

Key specifications

Parameter Value
Manufacturer RENESAS
Package SSOP-28-208mil
Category Interface ICs
Pins 28

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Driver Differential VOUT (with load, RS-422) VOD2 2 2.3 V R = 50Ω (RS-422) (Figure 1) 7
Driver Differential VOUT (with load, RS-485) VOD2 1.5 2 5 V R = 27Ω (RS-485) (Figure 1) 7
Driver Differential VOUT (common-mode load) VOD3 1.5 5 V RD = 60Ω, R = 375Ω, VCM = -7V to 12V (Figure 1) 7
Change in Magnitude of Driver Differential VOUT ΔVOD 0.01 0.2 V R = 27Ω or 50Ω (Figure 1) 7
Driver Common-Mode VOUT VOC 3 V R = 27Ω or 50Ω (Figure 1) 7
Change in Magnitude of Driver Common-Mode VOUT ΔVOC 0.01 0.2 V R = 27Ω or 50Ω (Figure 1) 7
Driver Short-Circuit Current (RS-485) IOS 35 250 mA -7V ≤ (VY or VZ) ≤ 12V 7
Driver Three-State Output Leakage Current IOZ 200 µA Outputs Disabled, VCC = 0V or 3.6V, VOUT = 12V 7
Driver Three-State Output Leakage Current IOZ -200 µA Outputs Disabled, VCC = 0V or 3.6V, VOUT = -7V 7
RS-232 Driver Output Voltage Swing VO 5 V All TOUTS Loaded with 3kΩ to Ground 7
RS-232 Driver Output Short-Circuit Current IOS -60 60 mA VOUT = 0V 7
Input High Voltage VIH1 2.2 V Full temp 7
Input Low Voltage VIL1 0.8 V Full temp 8
Input Current IIN1 -2 2 µA Pins Without Pull-ups or Pull-downs 8
Input Current IIN2 -25 25 µA LB, ON/OFF, DE 8
RS-485 Receiver Differential Threshold Voltage VTH -0.2 -0.04 V -7V ≤ VCM ≤ 12V, Full Failsafe 8
RS-485 Receiver Input Hysteresis VTH 35 mV VCM = 0V, 25°C 8
RS-485 Receiver Input Current (A, B) IIN 0.8 mA VCC = 0V or 3.0 to 3.6V, VIN = 12V 8
RS-485 Receiver Input Current (A, B) IIN -0.64 mA VCC = 0V or 3.0 to 3.6V, VIN = -7V 8
RS-485 Receiver Input Resistance RIN 15 kΩ -7V ≤ VCM ≤ 12V, VCC = 0 or 3.0V ≤ VCC ≤ 3.6V 8
RS-232 Receiver Input Voltage Range VIN -25 25 V Full temp 8
RS-232 Receiver Input Threshold Low VIL 1.1 0.8 V Full temp 8
RS-232 Receiver Input Threshold High VIH 2.4 1.6 V Full temp 8
RS-232 Receiver Input Hysteresis VTH 0.5 V 25°C 8
RS-232 Receiver Input Resistance RIN 3 5 7 kΩ VIN = 15V, VCC Powered Up 8
Receiver Output Low Voltage VOL 0.2 0.4 V IO = 5mA 8
Receiver Short-Circuit Current IOSR 7 85 mA 0V ≤ VO ≤ VCC 8
Receiver Three-State Output Current IOZR 10 µA Output Disabled, 0V ≤ VO ≤ VCC 8
Unused Receiver (RB) Pull-Up Resistance ROBZ 40 kΩ ON/OFF = VCC, SELX = VCC (RS-485 Mode), 25°C 8
No-Load Supply Current (RS-232) ICC232 3.7 7 mA SEL1 or SEL2 = GND, LB = ON/OFF = VCC 8
No-Load Supply Current (RS-485) ICC485 1.6 5 mA SEL 1 & 2 = LB = DE = ON/OFF = VCC 8
Shutdown Supply Current (RS-232) ISHDN232 45 100 µA ON/OFF = SELX = GND, LB = VCC 8
Shutdown Supply Current (RS-485, SSOP) ISHDN485 35 80 µA ON/OFF = DEX = GND, SELX = LB = VCC, SSOP 8
ESD Bus Pins (A, B, Y, Z) HBM 15 kV Any Mode, Human Body Model, 25°C 8
ESD All Other Pins HBM 2.5 kV Human Body Model, 25°C 8
ESD All Other Pins MM 200 V Machine Model, 25°C 8
RS-232 Driver Slew Rate SR 20 30 V/µs RL = 3kΩ, 3V to -3V, CL ≈ 15pF 9
RS-232 Driver Slew Rate SR 4 9 V/µs RL = 3kΩ, 3V to -3V, CL ≈ 2500pF 9
RS-232 Driver Propagation Delay tDPHL 1 2 µs RL = 3kΩ, CL = 1000pF (Figure 6) 9
RS-232 Driver Propagation Delay tDPLH 1.2 2 µs RL = 3kΩ, CL = 1000pF (Figure 6) 9
RS-232 Driver Enable Time from Shutdown tDENSD 25 µs VOUT = 3.0V, CL = 1000pF, 25°C 9
RS-232 Driver Maximum Data Rate DRD 250 400 kbps RL = 3kΩ, CL = 500pF, One Transmitter Switching on Each Port 9
RS-232 Receiver Propagation Delay tRPHL 40 120 ns CL = 15pF (Figure 7) 9
RS-232 Receiver Propagation Delay tRPLH 58 120 ns CL = 15pF (Figure 7) 9
RS-485 Driver Differential Input to Output Delay (fast) tDLH, tDHL 10 20 35 ns RDIFF = 54Ω, CL = 100pF (Figure 2) 9
RS-485 Driver Output Skew (fast) tSKEW 2 10 ns RDIFF = 54Ω, CL = 100pF (Figure 2) 9
RS-485 Driver Differential Rise or Fall Time (fast) tR, tF 3 20 30 ns RDIFF = 54Ω, CL = 100pF (Figure 2) 9
RS-485 Driver Maximum Data Rate (fast) fMAX 20 35 Mbps RDIFF = 54Ω, CL = 100pF (Figure 2) 9
RS-485 Receiver Input to Output Delay tPLH, tPHL 20 45 70 ns (Figure 4) 10
RS-485 Receiver Skew tSKEW 3 10 ns /tPLH - tPHL/ (Figure 4) 10
RS-485 Receiver Maximum Data Rate fMAX 20 40 Mbps 10
Supply Voltage (VCC to Ground) VCC 7 V TA = +25°C 7
Input Voltages All Except A, B -0.5 7 V 7
Input/Output Voltages A, B (Any Mode) -25 25 V 7
Input/Output Voltages Y, Z (Any Mode) -12.5 12.5 V One output at a time, IOUT ≤ 100mA for ≤ 10 mins 7
Maximum Junction Temperature (Plastic Package) 150 °C 7
Storage Temperature Range -65 150 °C 7
Supply Voltage Range VCC 3.15 3.3 3.45 V Test conditions VCC = 3.15V to 3.45V; typicals at 3.3V 7
Operating Temperature Range -40 85 °C 7
Thermal Resistance Junction to Ambient, 28 Ld SSOP θJA 60 °C/W Typical, 28 Ld SSOP Package 7

CAD (KiCad official)

  • Symbol: ISL3332IAZ
  • Footprint: Package_SO:SSOP-28_5.3x10.2mm_P0.65mm
  • 3D model: SSOP-28-208mil (KiCad packages3D, STEP)
  • 3D model files: isl3332iaz-etched.step / isl3332iaz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); isl3332iaz.step / isl3332iaz.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: RENESAS datasheet (28 pp, sha256 04894c599b496a1d, retrieved 2026-10-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF