555 timer IC
Derivatives

555 timer IC

Section Title: Derivatives
Table Section Text: None

Manufacturer	Part Number	Production Active	IC Process	Timer Total	Supply Min (Volt)	Supply Max (Volt)	5V Supply Iq (μA)	Frequency Max (MHz)	Remark	Datasheet

Custom Silicon Solutions	CSS555	Yes	CMOS	1	1.2	5.5	4.3	1.0	Low Voltage, Lowest Current Internal EEPROM configuration

Diodes Incorporated	ZSCT155	No	CMOS	1	0.9	6	150	0.33	Lowest supply voltage

Intersil	ICM7555	Yes	CMOS	1	2	18	40	1.0	Lowest current of common parts

Intersil	ICM7556	Yes	CMOS	2	2	18	80	1.0	Lowest current of common parts

Japan Radio Company	NJM555	Yes	Bipolar	1	4.5	16	3000	0.1*	SIP-8 package

Microchip Technology	MIC1555	Yes	CMOS	1*	2.7	18	240	5.0*	SOT23-5 package

ON Semiconductor	LM555	Yes	Bipolar	1	4.5	16	3000	0.1*	—

Signetics	NE555	No	Bipolar	1	4.5	16	3000	0.1*	First 555 timer DIP-8 and TO5-8 package

Signetics	NE556	No	Bipolar	2	4.5	16	6000	0.1*	First 556 timer DIP-14 package

Signetics	NE558	No	Bipolar	4*	4.5	18	4800*	0.1*	First 558 timer DIP-16 package

Texas Instruments	LM555	Yes	Bipolar	1	4.5	18	3000	0.1*	—

Texas Instruments	LM556	Yes	Bipolar	2	4.5	16	6000	0.1*	—

Texas Instruments	LMC555	Yes	LinCMOS	1	1.5	15	100	3.0	DSBGA-8 package (smallest 555)

Texas Instruments	NE555	Yes	Bipolar	1	4.5	16	3000	0.1*	Similar to Signetic NE555

Texas Instruments	NE556	Yes	Bipolar	2	4.5	16	6000	0.1*	Similar to Signetic NE556

Texas Instruments	TLC551	Yes	LinCMOS	1	1	15	170	1.8	Lowest voltage of active parts

Texas Instruments	TLC552	Yes	LinCMOS	2	1	18	340	2.8	Lowest voltage of active parts

Texas Instruments	TLC555	Yes	LinCMOS	1	2	15	170	2.1	—

Texas Instruments	TLC556	Yes	LinCMOS	2	2	15	340	2.1	—

X-REL Semiconductor	XTR655	Yes	—	1	2.8	5.5	170	4.0	Extreme temp (-60°C to +230°C)

Sentence(s)

Variants available include the 556 (a DIP-14 combining two complete 555s on one chip) and 558 (a DIP-16 combining four reduced timers on one chip).

final_sentence: Variants available include the 556 (a DIP-14 combining two complete 555s on one chip) and 558 (a DIP-16 combining four reduced timers on one chip).