Ultra Low Power 3-Pin Voltage Surveillance with Time-out. Applications. Pin Assignment. Fig. 1

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1 EM MICOELECTONIC - MAIN SA Ultra Low Power 3-Pin Voltage Surveillance with Time-out Description The is a CMOS device which monitors the supply voltage of any electronic system, and generates the appropriate eset signal. The threshold defines the minimum allowed voltage which guarantees the good functionality of the system. As long as V DD stays upside this voltage level, the output stays inactive. If V DD drops below V TH, the output gets active. When V DD rises above V TH, the output remains active for an additional 50ms (typ.). This allows the system to stabilize before getting fully active. The threshold voltage may be obtained in different versions: 2.0V, 2.4V, 2.8V, 3.5V, 4.0V, 4.5V. Applications All microprocessor applications where an automatic restart is required: Computer electronics White / Brown goods Automotive electronics Industrial electronics Telecom systems Hand-held systems Features Clear microprocessor restart after power up Processor reset at power down eset output guaranteed down to V DD = 1V Low power consumption: typ. 3µA at V DD = 5V -40 to +85 C temperature range On-chip oscillator No external components required Push-pull or Open drain output TO-92 and SOT-23 5L packages Pin compatible with DS 1233 A in TO-92 Typical Operating Configuration Pin Assignment Fig. 1 Fig. 2 Copyright 2004, EM Microelectronic-Marin SA 1

2 Absolute Maximum atings Parameter Symbol Conditions Voltage at V DD to V SS V DD -0.3V to +10V Minimum voltage at ES or ES V min V SS 0.3V Maximum voltage at ES or ES V max V DD + 0.3V Storage Temperature ange T STO -65 C to +150 C Table 1 Stresses above these listed maximum ratings may cause permanent damages to the device. Exposure beyond specified operating conditions may affect device reliability or cause malfunction. Handling Procedures This device has built-in protection against high static voltages or electric fields; however, it is advised that normal precautions be taken as for any other CMOS component. Unless otherwise specified, proper operation can only occur when all terminal voltages are kept within the voltage range. Operating Conditions Parameter Symbol Min Max Unit Operating Temperature 1) T A C Positive Supply Voltage V DD 1 8 V Table 2 1) The maximum operating temperature is confirmed by sampling at initial device qualification. Electrical Characteristics T A = -40 to +85 C, unless otherwise specified Parameter Symbol Test Conditions Min. Typ. 25 C 25 C Max. Unit Supply current 1) I DD V DD = 2V 3) µa I DD V DD = 5V µa I DD V DD = 8V µa Threshold voltage V TH Version: A,G,M V V TH Version: B,H,N V V TH Version: C,I,O V V TH Version: D,J,P V V TH Version: E,K,Q V V TH Version: F,L, V Threshold hysteresis V HYS 25 mv ES Output Low Level V OL V DD = 5V, I OL = 8mA mv V OL V DD = 3V, I OL = 4mA mv V OL V DD = 1V, I OL = 50µA mv ES Output High Level V OH V DD = 5V, I OH = -8mA V V OH V DD = 3V, I OH = -4mA V V OH V DD = 1V, I OH = -100µA mv Output leakage current 2) I LEAK V DD = 8V µa Table 3 1) ES or ES open 2) Only for Open drain versions 3) Versions A, G and M are tested at V DD = 1.8V Timing Characteristics V DD = 5.0V, T A = -40 to +85 C, unless otherwise specified Parameter Symbol Test Conditions Min. Typ. Max. Units Power on reset time t PO ms Sensitivity 4) t SEN for V DD = 5V to 3V in 5µs t µs eaction time 4) t for V DD = 5V to 3V in 5µs µs Table 4 Tested on versions with V TH higher than 3V 4) Copyright 2004, EM Microelectronic-Marin SA 2

3 Timing Waveforms Fig. 3 Block Diagram Fig. 4 Copyright 2004, EM Microelectronic-Marin SA 3

4 Pin Description TO-92 Pin Name Function 1 V DD Positive supply 2 ES or ES eset output 3 V SS Supply ground Table 5 SOT23-5L Pin Name Function 1 NC No connection 2 V SS Supply ground 3 NC No connection 4 ES or ES eset output 5 V DD Positive supply Table 6 Packaging and Ordering Information Dimensions of SOT23-5L Package Fig. 5 Dimensions of TO-92 Package Fig. 6 Copyright 2004, EM Microelectronic-Marin SA 4

5 Ordering Information Part Number: F SP5B Threshold Voltage and Output Type Package and Delivery Form SP5B = SOT23-5, Tape & eel 2.0V 2.4V 2.8V 3.5V 4.0V 4.5V TO3E = TO92, Ammopack Push-pull, eset active low A B C D E F Push-pull, eset active high G H I J K L Open drain, eset active low M N O P Q Table 7 Subject to minimum order quantity. Please contact EM Microelectronic for availability. When ordering, please specify the complete Part Number without space between letters: eg. FSP5B, etc. Marking for TO-92 Part Number Package Marking %TO3E % Table 8 Where % refers to the letter for the threshold voltage in Table 7 (B, C, D, etc). Marking for SOT23-5L 1) 2) Part Number Threshold Package and Top Marking 1) Top Marking 2) Output type Voltage Delivery Form with 4 Characters with 3 Characters ASP5B 2.0V ABAA BA# BSP5B 2.4V ABAB BB# CSP5B 2.8v Active low ABAC BC# DSP5B 3.5V push-pull ABAD BD# ESP5B 4.0V ABAE BE# FSP5B 4.5V ABAF BF# GSP5B 2.0V ABAG BG# HSP5B 2.4V ABAH BH# SOT23-5L, ISP5B 2.8v Active high ABAI BI# Tape & eel JSP5B 3.5V push-pull ABAJ BJ# 3000 pcs KSP5B 4.0V ABAK BK# LSP5B 4.5V ABAL BL# MSP5B 2.0V ABAM BM# NSP5B 2.4V ABAN BN# OSP5B 2.8v Active low ABAO BO# PSP5B 3.5V open-drain ABAP BP# QSP5B 4.0V ABAQ BQ# SP5B 4.5V ABA B# Table 9 Top marking with 4 characters is standard from Top marking with 3 characters is kept as information since it was used until Where # refers to the lot number (EM internal reference only) Traceability for small packages Due to the limited space on the package surface, the bottom marking contains a limited number of characters that provide only partial information for lot traceability. Full information for complete traceability is however provided on the packing labels of the product at delivery from EM: It is highly recommended that the customer insures full lot traceability of EM product in his final product. EM Microelectronic-Marin SA cannot assume responsibility for use of any circuitry described other than circuitry entirely embodied in an EM Microelectronic-Marin SA product. EM Microelectronic-Marin SA reserves the right to change the circuitry and specifications without notice at any time. You are strongly urged to ensure that the information given has not been superseded by a more up-to-date version. EM Microelectronic-Marin SA, 07/04, ev. H Copyright 2004, EM Microelectronic-Marin SA 5