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XR33038ID-F

MaxLinear · RS-485/RS-422 ICs · SOIC-8

XR33038ID-F from MaxLinear, in a SOIC-8. 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	RO	output	Receiver output: RO is high when A-B is at or above -50mV and low when A-B is at or below -200mV, and is enabled only while RE is low.
2	RE	input	Receiver output enable (hot swap): RO is enabled when RE is low and high-impedance when RE is high, and RE high with DE low enters low-power shutdown.
3	DE	input	Driver output enable (hot swap): outputs are enabled when DE is high and high-impedance when DE is low, and DE low with RE high enters low-power shutdown.
4	DI	input	Driver input: with DE high, a low on DI drives the non-inverting output low and the inverting output high, and a high on DI drives the non-inverting output high and the inverting output low.
5	GND	power_in	Ground reference for the device.
6	A	bidirectional	Non-inverting receiver input and non-inverting driver output on the analog bus, which withstands direct shorts up to ±18V and is rated ±15kV HBM ESD.
7	B	bidirectional	Inverting receiver input and inverting driver output on the analog bus, which withstands direct shorts up to ±18V and is rated ±15kV HBM ESD.
8	VCC	power_in	Power supply input operating from +2.8V to +5.5V; bypass to ground with a 0.1µF capacitor.

Key specifications

Parameter	Value
Manufacturer	MaxLinear
Package	SOIC-8
Category	Communication Interface Chip/UART/485/232
Pins	8

Electrical characteristics

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

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Supply voltage (absolute maximum)	VCC	-0.3		7	V		2
Input voltage at control and driver input (RE, DE, and DI)		-0.3		7	V		2
Receiver output voltage (RO)		-0.3			V		2
Driver output voltage (A and B)		-18		18	V		2
Receiver input voltage (A and B)		-18		18	V		2
Transient voltage pulse		-70		70	V	through 100, Figure 5	2
Driver output current		-250		250	mA		2
Storage temperature range		-65		150	°C		2
Lead temperature				300	°C	soldering, 10s	2
Maximum junction temperature				150	°C		2
Supply voltage range	VCC	2.8		5.5	V		3
Operating ambient temperature	TA	-40		85	°C	Unless otherwise noted: VCC = +2.8V to +5.5V	3
Differential driver output (RS-422), +3.0V to +5.5V	VOD	2			V	+3.0V ≤ VCC ≤ +5.5V; RL = 100 (RS-422), Figure 2	3
Differential driver output (RS-485), +3.0V to +5.5V	VOD	1.5			V	+3.0V ≤ VCC ≤ +5.5V; RL = 54 (RS-485), Figure 2	3
Differential driver output over common mode, +3.0V to +5.5V	VOD	1.5			V	+3.0V ≤ VCC ≤ +5.5V; -7V ≤ VCM ≤ +12V, Figure 3	3
Differential driver output (RS-422), +2.8V to +3.0V	VOD	1.8			V	+2.8V ≤ VCC ≤ +3.0V; RL = 100 (RS-422), Figure 2	3
Differential driver output (RS-485), +2.8V to +3.0V	VOD	1.4			V	+2.8V ≤ VCC ≤ +3.0V; RL = 54 (RS-485), Figure 2	3
Differential driver output over common mode, +2.8V to +3.0V	VOD	1.1			V	+2.8V ≤ VCC ≤ +3.0V; -7V ≤ VCM ≤ +12V, Figure 3	3
Change in magnitude of differential output voltage	VOD	-0.2		0.2	V	RL = 100 (RS-422), or RL = 54 (RS-485), Figure 2, Note 1	3
Driver common-mode output voltage (steady state)	VCM			3	V		3
Change in magnitude of common-mode output voltage	VCM	-0.2		0.2	V		3
Logic high threshold (DI, DE, RE), VCC 4.5V to 5.5V	VIH	2.8			V	+4.5V ≤ VCC ≤ 5.5V	3
Logic high threshold (DI, DE, RE), VCC 4.0V to 4.5V	VIH	2.3			V	+4.0V ≤ VCC ≤ 4.5V	3
Logic high threshold (DI, DE, RE), VCC 2.8V to 4.0V	VIH	2			V	+2.8V ≤ VCC ≤ +4.0V	3
Logic low threshold (DI, DE, RE)	VIL			0.8	V		3
Logic input current (DI, DE, RE)	IIN	-1		1	µA	0V ≤ VIN ≤ VCC, After first transition, Note 2	3
Logic input current (DE and RE) until first transition	IIN	-200	100	200	µA	Until first transition, Note 2	3
Input current (A and B)	IA, B			125	µA	VOUT = +12V, DE = 0V, VCC = 0V or +5.5V	3
Input current (A and B)	IA, B	-100			µA	VOUT = -7V, DE = 0V, VCC = 0V or +5.5V	3
Output leakage (Y and Z)	IOL			125	µA	Full Duplex (Note 2); VOUT = +12V, DE = 0V, VCC = 0V or +5.5V	3
Output leakage (Y and Z)	IOL	-100			µA	Full Duplex (Note 2); VOUT = -7V, DE = 0V, VCC = 0V or +5.5V	3
Driver short-circuit output current	IOSD	-250		250	mA	-7V ≤ VOUT ≤ +12V, Figure 4	3
Receiver differential input threshold voltage (VA - VB)	VTH	-200	-125	-50	mV	-7V ≤ VCM ≤ +12V	4
Receiver output low voltage (RO)	VOL			0.4	V	IOUT = 1mA	4
High-Z receiver output current	IOZR	-1		1	µA	0V ≤ VOUT ≤ VCC	4
Receiver input resistance	RIN	96			k	-7V ≤ VCM ≤ +12V	4
Receiver output short-circuit current	IOSC	-120		120	mA	0V ≤ VRO ≤ VCC	4
Supply current	ICC		400	600	µA	No Load, RE = 0V, DE = VCC, DI = 0V	4
Supply current	ICC		300	600	µA	No Load, RE = VCC, DE = VCC, DI = 0V	4
Supply current	ICC		300	500	µA	No Load, RE = 0V, DE = 0V, Receiver A and B inputs open	4
Supply current in shutdown mode	ISHDN		0.04	1	µA	RE = VCC, DE = 0V	4
ESD protection for A, B, Y, and Z		-15		15	kV	Human Body Model	4
ESD protection for A, B, Y, and Z		-8		8	kV	IEC 61000-4-2 Contact	4
ESD protection for all other pins		-4		4	kV	Human Body Model	4
Time to shutdown (driver section)	tSHDN	50	200	600	ns	Notes 3	7
Time to shutdown (receiver section)	tSHDN	50	200	600	ns	Notes 3	7
Thermal resistance junction-to-ambient, 8-pin SO	JA		128.4		°C/W		2
Input hysteresis (DI, DE, RE)	VHYS		100		mV		3
Driver thermal shutdown temperature	TTS		175		°C	Junction temperature	4
Driver thermal shutdown hysteresis	TTSH		15		°C		4
Receiver input hysteresis	VOH		25		mV	VCM = 0V	4
Driver propagation delay (low to high), XR33038	tDPLH		30		ns	CL = 50pF, RL = 54, Figure 6	7
Driver propagation delay (high to low), XR33038	tDPHL		30		ns	CL = 50pF, RL = 54, Figure 6	7
Differential driver output skew, XR33038	/tDPLH-tDPHL/		5		ns		7
Driver differential output rise or fall time, XR33038	tDR, tDF		25		ns		7
Receiver propagation delay (low to high), XR33038	tRPLH		50		ns	CL = 15pF, VID = ±2V, VID rise and fall times < 15ns, Figure 8	7
Receiver propagation delay (high to low), XR33038	tRPHL		50		ns	CL = 15pF, VID = ±2V, VID rise and fall times < 15ns, Figure 8	7
Receiver propagation delay skew, XR33038	/tRPLH-tRPHL/		5		ns		7
Driver enable from shutdown to output high, XR33038	tDZH(SHDN)		250		ns	CL = 50pF, RL = 500, Figure 7	7

CAD (KiCad official)

Symbol: XR33038ID-F
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)
3D model files: xr33038id-f-etched.step / xr33038id-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); xr33038id-f.step / xr33038id-f.glb are the bare package body.

Provenance

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

Datasheet: MaxLinear datasheet (19 pp, sha256 fa548c51581f4b2a, retrieved 2026-10-28, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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