Preliminary Datasheet RNA51958A, B R03DS0011EJ0400 Rev.4.00 Voltage Detecting, System Resetting IC Series Jun 19, 2012 Description RNA51958A,B are semiconductor integrated circuits for resetting of all types of logic circuits such as CPUs, and has the feature of setting the detection voltage by adding external resistance. 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) 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 RNA51958AFPH0 SOP-8 pin PRSP0008DE-C FP H (2,500 pcs / Reel) 0 (Ni/Pd/Au) RNA51958APT0 DIP-8 pin PRDP0008AF-B P T (1,000 pcs / Box) 0 (Ni/Pd/Au) RNA51958BFPH0 SOP-8 pin PRSP0008DE-C FP H (2,500 pcs / Reel) 0 (Ni/Pd/Au) RNA51958BPT0 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 R03DS0011EJ0400 Rev.4.00 Page 1 of 13 Jun 19, 2012 RNA51958A, B Preliminary Outline and Article Indication RNA51958A, B Part No. R 9 5 8 A R 9 5 8 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 8A R5519 8B Y MWY M W DIP-8 W: Week Code M: Month Code Y: Year Code Pin Arrangement RNA51958A, B NC 1 8 NC Input 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) R03DS0011EJ0400 Rev.4.00 Page 2 of 13 Jun 19, 2012