The Electronics Bench...

All prices shown are in Canadian dollars. At present, $7.00 CDN is approximately equal to $4.70 U.S.

Internal pullups simplify the connection of up to three mechanical switches to this device. Each independent circuit provides 25ms of debouncing on both pickup and dropout. A very handy device for interfacing to almost any logic circuit.
(PDIP $7.00 CDN, SOIC $8.00 CDN)

Similar to the ELM410, but one of the outputs toggle on and off with each press of a momentary pushbutton. The other two circuits simply provide inverted, debounced outputs.
(PDIP $7.00 CDN, SOIC $8.00 CDN)

Ever need to simply turn a piezo buzzer on and off? The ELM412 provides all of the logic to drive a buzzer for you. It has one pin control, and digital selection of eight different operating frequencies. A push-pull output stage is used to provide high output power, even with a 3V supply.
(PDIP $7.00 CDN, SOIC $8.00 CDN)

A handy device for driving either single or two colour LEDs, based on the state of an input. An auxiliary (delayed) output is provided for sequentially enabling other circuits after 0.1 to 5 seconds. This self contained circuit generates its own timing signals, and can directly drive most LEDs using only a single resistor.
(PDIP $7.00 CDN, SOIC $8.00 CDN)

This circuit generates both 60Hz and 1Hz from a common 3.58MHz NTSC TV crystal. A synchronizing input is also provided for locking the output to a 60Hz line frequency signal if available (recommended for long-term stability). Switching between sync-lock and free-running is automatic. Handy for battery-backed clock circuits.
(PDIP $7.00 CDN, SOIC $8.00 CDN)

This chip also uses a 3.58MHz NTSC television crystal to generate complementary 50Hz outputs as well as a 1Hz output. Greatly simplifies many timekeeping tasks as the 20ms period is often handier for calculations than 16.67ms. This circuit does not have a sync-lock input.
(PDIP $7.00 CDN, SOIC $8.00 CDN)

A single pushbutton press initiates either an eight or a fourteen hour timing cycle for charging Nickel Cadmium batteries. If desired, the period can also be programmed in one hour increments. Requires a full-wave rectified 60Hz signal for timing.
(PDIP $7.00 CDN, SOIC $8.00 CDN)

Reduce circuit board clutter when trying to obtain those very long time delays. The ELM381 provides 1 hour to 1 week periods using a 60Hz clock input. Digitally select one of four desired periods, apply a line frequency signal to the Schmitt clock input, and use the high current outputs to drive your circuit.
(PDIP $7.00 CDN, SOIC $8.00 CDN)

Reduce circuit board clutter when trying to obtain those very long time delays. The ELM382 provides 1 hour to 1 week periods using a 50Hz clock input. Digitally select one of four desired periods, apply a line frequency signal to the Schmitt clock input, and use the high current outputs to drive your circuit.
(PDIP $7.00 CDN, SOIC $8.00 CDN)

This integrated circuit uses no external timing components to generate signals with periods from 0.1 seconds to 10 minutes. Timing is digitally selected via four input pins, and complementary output signals are provided. It doesn't have as much output drive as a 555, but sure is much easier to use.
(PDIP $7.00 CDN, SOIC $8.00 CDN)