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TLPN137

TOSHIBA · Logic Output Optoisolators · DIP-8

TLPN137 from TOSHIBA, in a DIP-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	N.C.	unconnected	Not connected (N.C.) per the pin configuration; the datasheet gives no function or limit for this pin.
2	Anode	input	LED anode input; the datasheet specifies input forward current IF of 20 mA absolute maximum and recommended IF(ON) of 6.3 to 15 mA.
3	Cathode	input	LED cathode; the input reverse voltage VR is rated at 5 V maximum and input forward current is limited to 20 mA.
4	N.C.	unconnected	Not connected (N.C.) per the pin configuration; the datasheet gives no function or limit for this pin.
5	GND	power_in	Ground reference for the detector; a 0.1 µF ceramic capacitor should be connected between pin 8 and pin 5, placed within 1 cm of each pin, to stabilize the high-gain amplifier.
6	VO (Output)	output	Open-collector logic output (inverter type) with absolute maximum output voltage VO of 6 V and output current IO of 50 mA; sinks 13 mA with VO below 0.6 V in the low state.
7	N.C.	unconnected	Not connected (N.C.) per the pin configuration; the datasheet gives no function or limit for this pin.
8	VCC	power_in	Supply voltage pin rated 4.5 to 5.5 V recommended (6 V absolute maximum), to be bypassed to pin 5 with a 0.1 µF ceramic capacitor.

Key specifications

Parameter	Value
Manufacturer	TOSHIBA
Package	DIP-8
Category	Optoisolators
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
Input forward voltage	VF	1.45	1.55	1.7	V	IF = 10 mA, Ta = 25	4
Input reverse current	IR			10	µA	VR = 5 V, Ta = 25	4
High-level output current	IOH			50	µA	VF = 0.8 V, VO = 5.5 V, VCC = 5.5 V	4
High-level output current	IOH			10	µA	VF = 0.8 V, VO = 5.5 V, VCC = 5.5 V, Ta = 25	4
Low-level output voltage	VOL		0.23	0.6	V	IF = 5 mA, IO = 13 mA (Sinking)	4
High-level supply current	ICCH		1.6	4	mA	IF = 0 mA	4
Low-level supply current	ICCL		1.8	4	mA	IF = 10 mA	4
Threshold input current (H/L)	IFHL		1.3	5	mA	IO = 13 mA (Sinking), VO < 0.6 V	4
Propagation delay time (H/L)	tpHL			100	ns	IF = 0→7.5 mA, RL = 350 Ω, CL = 15 pF	5
Propagation delay time (H/L), Ta = 25	tpHL		35	75	ns	IF = 0→7.5 mA, RL = 350 Ω, CL = 15 pF, Ta= 25	5
Propagation delay time (L/H)	tpLH			100	ns	IF = 7.5→0 mA, RL = 350 Ω, CL = 15 pF	5
Propagation delay time (L/H), Ta = 25	tpLH		25	75	ns	IF = 7.5→0 mA, RL = 350 Ω, CL = 15 pF, Ta = 25	5
Pulse width distortion	/tpHL-tpLH/			35	ns	IF = 7.5 mA, RL = 350 Ω, CL = 15 pF	5
Propagation delay skew (device to device)	tpsk			40	ns		5
Common-mode transient immunity at output high	CMH	-10	15		kV/µs	VCM = 1000 Vp-p, IF = 0 mA, VCC = 5 V, Ta = 25	5
Common-mode transient immunity at output low	CML	-10	15		kV/µs	VCM = 1000 Vp-p, IF = 10 mA, VCC = 5 V, Ta = 25	5
Isolation voltage	BVS	5000			Vrms	AC, 1 min	4
Input on-state current	IF(ON)	6.3		15	mA	Note 1: rise and fall times of input on-current < 0.5 µs	3
Input off-state voltage	VF(OFF)	0		0.8	V	Note 2: operating range, not recommended condition	3
Supply voltage	VCC	4.5	5	5.5	V	Note 2: operating range, not recommended condition	3
Operating temperature	Topr	-40		85	°C	Note 2: operating range, not recommended condition	3
Input forward current	IF			20	mA		3
Input forward current (pulsed)	IFP			40	mA	PW ≤ 1 ms, duty = 50%	3
Peak transient input forward current	IFPT			1	A	PW ≤ 1 µs, 300 pps	3
Input power dissipation	PD			40	mW		3
Input reverse voltage	VR			5	V		3
Output current	IO			50	mA		3
Output voltage	VO			6	V		3
Supply voltage	VCC			6	V		3
Output power dissipation	PO			85	mW		3
Operating temperature	Topr	-40		85	°C		3
Storage temperature	Tstg	-55		125	°C		3
Lead soldering temperature	Tsol			260	°C	10 s	3
Isolation voltage	BVS			5000	Vrms	AC, 1 min, R.H. ≤ 60%	3
Input forward voltage temperature coefficient	ΔVF/ΔTa		-2		mV/°C	IF = 10 mA	4
Input capacitance	Ct		60		pF	V = 0 V, f = 1 MHz, Ta = 25	4
Fall time	tf		3		ns	IF = 7.5 → 0 mA, RL = 350 Ω, CL = 15 pF	5
Rise time	tr		12		ns	IF = 0 → 7.5 mA, RL = 350 Ω, CL = 15 pF	5
Total capacitance (input to output)	CS		1		pF	VS = 0 V, f = 1 MHz	4
Isolation voltage, AC 1 s in oil	BVS		10000		Vrms	AC, 1 s in oil	4
Isolation voltage, DC 1 min in oil	BVS		10000		Vdc	DC, 1 min in oil	4

CAD (KiCad official)

Symbol: TLPN137
Footprint: Package_DIP:DIP-8_W7.62mm
3D model: DIP-8 (KiCad packages3D, STEP)
3D model files: tlpn137-etched.step / tlpn137-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tlpn137.step / tlpn137.glb are the bare package body.

Provenance

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

Datasheet: TOSHIBA datasheet (12 pp, sha256 51540538462bd5a1, retrieved 2026-10-14, tier: lcsc)
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