ISL4489EIBZ-T from RENESAS, in a SOIC-14. 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	NC	unconnected	No connection; the pin is not connected internally.
2	RO	tri_state	Receiver output: high if A > B by at least 0.2V, low if A < B by 0.2V or more, high if A and B are floating; high-impedance when RE is high.
3	RE	input	Receiver output enable: RO is enabled when RE is low and is high-impedance when RE is high.
4	DE	input	Driver output enable: outputs Y and Z are enabled when DE is high and are high-impedance when DE is low.
5	DI	input	Driver input: a low on DI forces Y low and Z high, and a high on DI forces Y high and Z low.
6	GND	power_in	Ground connection.
7	GND	power_in	Ground connection.
8	NC	unconnected	No connection; the pin is not connected internally.
9	Y	tri_state	Noninverting driver output, ±15kV HBM ESD protected on the RS-485 bus.
10	Z	tri_state	Inverting driver output, ±15kV HBM ESD protected on the RS-485 bus.
11	B	input	Inverting receiver input, ±15kV HBM ESD protected; 1/8 unit load with -7V to +12V common-mode range.
12	A	input	Noninverting receiver input, ±15kV HBM ESD protected; 1/8 unit load with -7V to +12V common-mode range.
13	NC	unconnected	No connection; the pin is not connected internally.
14	VCC	power_in	System power supply input, 4.5V to 5.5V.

Key specifications

Parameter	Value
Manufacturer	RENESAS
Package	SOIC-14
Category	Interface ICs
Pins	14

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 VCC (10% tolerance)	VCC	4.5	5	5.5	V	Typicals at VCC = 5V, TA = +25°C	4
Operating temperature range		-40		85	°C		4
VCC to Ground				7	V		4
Input voltages DI, DE, RE		-0.5			V	Maximum is (VCC +0.5V)	4
Input/output voltages A, B, Y, Z		-8		12.5	V		4
Output voltage RO		-0.5			V	Maximum is (VCC +0.5V)	4
Maximum junction temperature (plastic package)				150	°C		4
Maximum storage temperature range		-65		150	°C		4
Maximum lead temperature (soldering)				300	°C	Soldering 10s, lead tips only	4
Thermal resistance, junction to ambient, 14 Ld SOIC	JA		128		°C/W	14 Ld SOIC package, typical, Note 4	4
Driver differential VOUT (with load), RS-422	VOD2	2	3		V	R = 50Ω (RS-422) (Figure 1)	4
Driver differential VOUT (with load), RS-485	VOD2	1.5	2.3	5	V	R = 27Ω (RS-485) (Figure 1)	4
Change in magnitude of driver differential VOUT for complementary output states	VOD		0.01	0.2	V	R = 27Ω or 50Ω (Figure 1)	4
Driver common-mode VOUT	VOC			3	V	R = 27Ω or 50Ω (Figure 1)	4
Change in magnitude of driver common-mode VOUT for complementary output states	VOC		0.01	0.2	V	R = 27Ω or 50Ω (Figure 1)	4
Logic input high voltage (DE, DI, RE)	VIH	2			V		4
Logic input low voltage (DE, DI, RE)	VIL			0.8	V		4
Logic input current (DI)	IIN1	-2		2	µA		4
Logic input current (DE, RE)	IIN1	-40		40	µA		4
Input current (A, B) at VIN = 12V	IIN2			130	µA	DE = 0V, VCC = 0V or 4.5 to 5.5V, VIN = 12V	4
Input current (A, B) at VIN = -7V	IIN2	-100			µA	DE = 0V, VCC = 0V or 4.5 to 5.5V, VIN = -7V	4
Driver tri-state (high impedance) output current (Y, Z)	IOZD	-100		100	µA	-7V ≤ VO ≤ 12V	4
Receiver differential threshold voltage	VTH	-0.2		0.2	V	-7V ≤ VCM ≤ 12V	4
Receiver output high voltage	VOH	3.5			V	IO = -4mA, VID = 200mV	4
Receiver output low voltage	VOL			0.4	V	IO = -4mA, VID = 200mV	4
Tri-state (high impedance) receiver output current	IOZR	-1		1	µA	0.4V ≤ VO ≤ 2.4V	4
Receiver input resistance	RIN	92	120		kΩ	-7V ≤ VCM ≤ 12V	4
No-load supply current (ISL4489E)	ICC		140	190	µA	DE, DI, RE = 0V or VCC	4
Driver short-circuit current, VO = high or low	IOSD1	35		250	mA	DE = VCC, -7V ≤ VY or VZ ≤ 12V (Note 7)	4
Receiver short-circuit current	IOSR	7		85	mA	0V ≤ VO ≤ VCC	4
Driver input to output delay (ISL4489E)	tPLH, tPHL	250	400	2000	ns	RDIFF = 54Ω, CL = 100pF (Figure 2)	5
Driver output skew (ISL4489E)	tSKEW		160	800	ns	RDIFF = 54Ω, CL = 100pF (Figure 2)	5
Driver differential rise or fall time (ISL4489E)	tR, tF	250	600	2000	ns	RDIFF = 54Ω, CL = 100pF (Figure 2)	5
Driver enable to output high (ISL4489E)	tZH	250	1000	2000	ns	CL = 100pF, SW = GND (Figure 3)	5
Driver enable to output low (ISL4489E)	tZL	250	860	2000	ns	CL = 100pF, SW = VCC (Figure 3)	5
Driver disable from output high (ISL4489E)	tHZ	300	660	3000	ns	CL = 15pF, SW = GND (Figure 3)	5
Driver disable from output low (ISL4489E)	tLZ	300	640	3000	ns	CL = 15pF, SW = VCC (Figure 3)	5
Receiver input to output delay (ISL4489E)	tPLH, tPHL	250	500	2000	ns	Figure 4	5
Receiver enable to output high (ISL4489E)	tZH		10	50	ns	CL = 15pF, SW = GND (Figure 5)	5
Receiver enable to output low (ISL4489E)	tZL		10	50	ns	CL = 15pF, SW = VCC (Figure 5)	5
Receiver disable from output high (ISL4489E)	tHZ		10	50	ns	CL = 15pF, SW = GND (Figure 5)	5
Receiver disable from output low (ISL4489E)	tLZ		10	50	ns	CL = 15pF, SW = VCC (Figure 5)	5
Maximum data rate (ISL4489E)	fMAX	250			kbps		5

CAD (KiCad official)

Symbol: ISL4489EIBZ-T
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOIC-14 (KiCad packages3D, STEP)
3D model files: isl4489eibz-t-etched.step / isl4489eibz-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); isl4489eibz-t.step / isl4489eibz-t.glb are the bare package body.

Provenance

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

Datasheet: RENESAS datasheet (14 pp, sha256 3c93e38272d15128, retrieved 2026-10-31, 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

ISL4489EIBZ-T

Verified ISL4489EIBZ-T

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3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

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