555 Timer IC - Derivatives

Derivatives

Many pin-compatible variants, including CMOS versions, have been built by various companies. Bigger packages also exist with two or four timers on the same chip. The 555 is also known under the following type numbers:

Manufacturer Model Remark
Avago Technologies Av-555M
Custom Silicon Solutions CSS555/CSS555C CMOS from 1.2 V, IDD < 5 µA
CEMI ULY7855
ECG Philips ECG955M
Exar XR-555
Fairchild Semiconductor NE555/KA555
Harris HA555
IK Semicon ILC555 CMOS from 2 V
Intersil SE555/NE555
Intersil ICM7555 CMOS
Lithic Systems LC555
Maxim ICM7555 CMOS from 2 V
Motorola MC1455/MC1555
National Semiconductor LM1455/LM555/LM555C
National Semiconductor LMC555 CMOS from 1.5 V
NTE Sylvania NTE955M
Raytheon RM555/RC555
RCA CA555/CA555C
STMicroelectronics NE555N/ K3T647
Texas Instruments SN52555/SN72555
Texas Instruments TLC555 CMOS from 2 V
USSR K1006ВИ1
Zetex ZSCT1555 down to 0.9 V
NXP Semiconductors ICM7555 CMOS
HFO / East Germany B555

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