XD7555 – CMOS Timer IC – Xinluda

The Xinluda XD7555 is a single CMOS RC timer in a DIP-8 package, offering a low-power, direct-replacement upgrade to the standard NE/SE555 for monostable and astable timing applications.

The Xinluda XD7555 is a general-purpose CMOS RC timer supplied in an 8-pin DIP package. It is, in most instances, a direct replacement for the industry-standard SE/NE 555 timer, but uses a CMOS process to deliver significantly lower power consumption, wider supply-voltage operation, and dramatically reduced supply-current spiking during output transitions. The XD7555 is the DIP-8 member of Xinluda’s 7555 timer family (the XL7555 is the SOP-8 surface-mount equivalent).

In the monostable (one-shot) mode, the output pulse width is set by a single external resistor and capacitor. In astable mode, the free-running frequency and duty cycle are controlled by external resistors and a capacitor, supporting oscillator and timing-delay designs.

Key Features

• Single CMOS RC timer, direct replacement for SE/NE 555 in most applications
• Wide functional supply-voltage range: 2 V to 18 V
• Low static supply current (typ. 60 uA at VDD = 15 V; typ. 40 uA at VDD = 5 V)
• High-speed operation, oscillator frequency up to 1 MHz
• Supply-current spikes of only ~2-3 mA during transitions (vs. ~300-400 mA for bipolar 555), so supply decoupling is normally unnecessary
• Low threshold, trigger, and reset currents (typ. 10 nA)
• Monostable (one-shot) and astable (oscillator) operation
• 8-pin DIP package, RoHS / Pb-free

Applications

• Precision timing and time-delay generation
• Pulse generation and pulse-width modulation
• Low-power oscillators and clock generation
• Sequential and missing-pulse timing circuits
• Battery-powered and portable equipment requiring a low-current 555

Why Source XD7555 from Pacific Component Xchange

The Xinluda XD7555 is a regional-market part with limited authorized-distributor coverage, which can make it difficult to source for production builds, BOM substitutions, or NE555-to-CMOS migrations. Pacific Component Xchange specializes in hard-to-find and end-of-availability power-management and timing ICs. We help engineers and buyers secure the right orderable part with authenticity verification, lot traceability where available, and global shipping. If you need the XD7555 or a qualified 7555/555 equivalent, submit an RFQ and our sourcing team will respond with availability, lead time, and pricing for your required quantity.