Preliminary Datasheet RNA51953A, B R03DS0009EJ0500 Rev.5.00 Voltage Detecting, System Resetting IC Series Jun 19, 2012 Description RNA51953A,B are semiconductor integrated circuits designed for detecting supply voltage and resetting all types of logic circuits such as CPUs. They include a built-in delay circuit to provide the desired retardation time simply by adding an external capacitor. They fined extensive applications, including battery checking circuit, level detecting circuit and waveform shaping circuit. Features Few external parts Large delay time with a capacitor of small capacitance (td 100 ms, at 0.33 F) Low threshold operating voltage (Supply voltage to keep low-state at low supply voltage): 0.6 V (Typ) at RL = 22 k Wide supply voltage range: 2 V to 17 V Wide application range Ordering Information Taping Abbreviation Package Surface Part Name Package Type Package Code Abbreviation (Quantity) Treatment RNA51953AFPH0 SOP-8 pin PRSP0008DE-C FP H (2,500 pcs / Reel) 0 (Ni/Pd/Au) RNA51953APT0 DIP-8 pin PRDP0008AF-B P T (1,000 pcs / Box) 0 (Ni/Pd/Au) RNA51953BFPH0 SOP-8 pin PRSP0008DE-C FP H (2,500 pcs / Reel) 0 (Ni/Pd/Au) RNA51953BPT0 DIP-8 pin PRDP0008AF-B P T (1,000 pcs / Box) 0 (Ni/Pd/Au) Application Reset circuit of Pch, Nch, CMOS, microcomputer, CPU and MCU, Reset of logic circuit, Battery check circuit, switching circuit back-up voltage, level detecting circuit, waveform shaping circuit, delay waveform generating circuit, DC/DC converter, over voltage protection circuit Recommended Operating Condition Supply voltage range: 2 V to 17 V R03DS0009EJ0500 Rev.5.00 Page 1 of 10 Jun 19, 2012 RNA51953A, B Preliminary Outline and Article Indication RNA51953A, B Part No. R 9 5 3 A R 9 5 3 B Lot No. YMWC YMWC Y: Year Code (the last digit of year) CCC CCC M: Month Code W: Week Code SOP-8 C: Control Code Pin No.1 Trace Code Part No. R5519 3A R5519 3B Y MWY M W DIP-8 W: Week Code M: Month Code Y: Year Code Pin Arrangement RNA51953A, B NC 1 8 NC NC 2 7 Power-supply NC 3 6 Output GND 4 5 Delay capacitor (Top view) NC: No Connection Outline: PRSP0008DE-C (SOP-8) PRDP0008AF-B (DIP-8) R03DS0009EJ0500 Rev.5.00 Page 2 of 10 Jun 19, 2012