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Japan
µPD5555
| Overview | Features | Ordering Information | Equivalent Circuit |
Overview
The µPD5555 is a CMOS version of the µPC617/1555 timer IC. Being a CMOS circuit, the µPD5555 circuit requires only a little current, and outperforms the bipolar version in characteristics such as operating voltage, reset pin function, input current, and oscillation frequency. Moreover, its circuit configuration is highly immune to chattering, so it is best suited for applications such as a one-shot multivibrator and pulse generator.
Features
- Supply voltage: 3 to 16 V
- Circuit current (VDD = 5 V): 115 µA (TYP.)
- Output saturation voltage (ISINK = 3.2 mA): 0.14V (TYP.)
- Requires only a small power supply bypass capacitance because of only a little switching noise occurring
0.047 µF for VDD < 10 V
0.1 µF for VDD ≥ 10 V - No intrference occurs even if two or more units of this model are connected to the same power supply line.
- Setting the reset pin to a low level stops oscillation, thus clamping the output to a low level.
- Can drive both CMOS and TTL circuits.
- Sufficient provision to prevent electrostatic breakdown.
Ordering Information
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Equivalent Circuit
Inquiry Concerning Timer IC
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