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CD4047B — CMOS Low-Power Monostable / Astable Multivibrator
Texas Instruments / onsemi CMOS low-power monostable and astable multivibrator IC generating precision 50% duty cycle complementary square waves (Q and Q-bar) with a single resistor and capacitor in a 14-pin DIP package.
Device TypeCMOS Monostable / Astable MultivibratorSupply Voltage3–18Vcd4047cd4047b
14-pin DIP (DIP-14 / PDIP-14) / 14-pin SOIC2026-08-25
Timing
CD4060 — 14-Stage Binary Counter with On-Chip Oscillator
Texas Instruments 14-stage binary ripple counter with integrated RC or crystal oscillator driver circuit, providing frequency division up to 16,384 for long-period timers.
Supply Voltage3–18VDivider Stages14 Stages (Divide by up to 16,384)cd4060cd4060b
16-pin DIP / SOIC-162026-08-09
Timing
DS1307 — Serial Real-Time Clock (RTC) with 56-Byte NV RAM
Maxim Integrated / Analog Devices low-power, full binary-coded decimal (BCD) real-time clock IC with 56 bytes of nonvolatile SRAM, maintaining seconds, minutes, hours, day, date, month, and year over I2C.
Supply Voltage4.5–5.5VBackup Battery Voltage3Vds1307rtc
8-pin DIP, SOIC-8 / Tiny RTC Breakout Board with CR2032 Battery2026-08-03
Timing
DS3231 — Extremely Accurate I2C Real-Time Clock with Integrated TCXO
Maxim Integrated / Analog Devices low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and 32.768 kHz crystal.
Supply Voltage2.3–5.5VTimekeeping Accuracy Ppm2ds3231rtc
16-pin SO (300 mil) / Breakout PCB2026-08-03
Timing
NE555 — Precision Timer IC
Texas Instruments industry-standard precision timer producing accurate delays or oscillation in monostable or astable modes, with TTL-compatible output able to sink or source up to 200 mA.
Supply Voltage4.5–16VOutput Current200mAne555lm555
8-pin PDIP / SOIC-8 / TSSOP-82026-08-04
Timing
NE556 — Dual Precision CMOS/Bipolar Timer IC
Dual version of the industry-standard 555 timer IC in a 14-pin DIP package, containing two fully independent timing circuits capable of operating in astable, monostable, and PWM modes from 4.5V to 16V.
Timer Channels2 Independent TimersSupply Voltage4.5–16Vne556lm556
14-pin DIP / SOIC-142026-08-08
Timing
TLC555 — LinCMOS™ Low-Power Precision Timer
Texas Instruments LinCMOS low-power version of the 555 timer IC with ultra-low supply current (170µA at 5V), high input impedance (10^12 Ω), and operation up to 2.1MHz.
Supply Voltage2–15VQuiescent Current170µAtlc555tlc555ip
8-pin PDIP / SOIC-8 / TSSOP-82026-08-12

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