G699

Global Mixed-mode Technology Inc. G698/G699 Microprocessor Reset IC Features Precision Monitoring of +3V, +3.3V, and +5V Power-Supply Voltages General Description The G698/G699 are microprocessor (µP) supervisory circuits used to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost and adjustments when used with +5V, +3.3V, +3.0V - powered circuits. These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, with hysteresis keeping it asserted for time delay determined by externally programmable time delay generator after VCC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available. The G699L has an open-drain output stage, while the G698 have push-pull outputs. The G699L’s open-drain RESET output requires a pull-up resistor that can be connected to a voltage higher than VCC. The G698L have an active-low RESET output, while the G698H has an active-high RESET output. The reset comparator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 0.8V. Low supply current makes the G698/G699 ideal for use in portable equipment. The G698/G699 are available in 5-pin SOT23-5 packages. Fully Specified Over Temperature Available in Three Output Configurations Push-Pull RESET Output (G698L) Push-Pull RESET Output (G698H) Open-Drain RESET Output (G699L) Externally Programmable Time Delay Generator 14µA Supply Current Guaranteed Reset Valid to VCC = 0.8V Power Supply Transient Immunity 5 pin SOT23-5 Packages 2% Threshold Accuracy Applications Computers Controllers Intelligent Instruments Critical µP and µC Power Monitoring Portable / Battery-Powered Equipment Automotive Ordering Information ORDER NUMBER TEMP. RANGE G698H(L)xxxT1U G699LxxxT1U -40°C ~ +105°C -40°C ~ +105°C PACKAGE SOT23-5 SOT23-5 Note:T1 : SOT23-5 U : Tape & Reel * xxx specifies the threshold voltage. e.g. 263 denotes the 2.63V threshold voltage. Pin Configuration Typical Application Circuit VCC CD 1 5 VCC VCC Rpull-up* VCC GND 2 G698/G699 G698/G699 CD RESET (RESET) GND CD µP RESET INPUT GND GND 3 SOT23-5 SOT23-5 4 RESET (RESET) ()is for G698H *G699 ONLY Ver: 1.3 Jun 03, 2004 TEL: 886-3-5788833 http://www.gmt.com.tw 1 Global Mixed-mode Technology Inc. Absolute Maximum Ratings Terminal Voltage (with respect to GND) VCC.……………………………..…….…….-0.3V to +6.0V Delay Capacitor Pin Voltage, VCD…..-0.3 to (VCC +0.3V) RESET, RESET (push-pull)....…....-0.3V to (VCC + 0.3V) RESET (open drain)...…......…................-0.3V to +6.0V Input Current, VCC ............................…..…............20mA Output Current, RESET, RESET ......…...............20mA G698/G699 Continuous Power Dissipation (TA = +70°C) 5-Pin SOT23-5 (derate 2.17mW/°C above +70°C).174mW Operating Temperature Range …...…..-40°C to +105°C Storage Temperature Range..….…......-65°C to +150°C Lead Temperature (soldering, 10s).….….………+260°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Electrical Characteristics (VCC = full range, TA = -40°C to +105°C, unless otherwise noted. Typical values are at TA = +25°C, VCC = 5V for 463/438/400 versions, VCC= 3.3V for 308/293 versions, and VCC = 3V for 263 version.) (Note 1) PARAMETER VCC Range Supply Current (SOT23-5) ICC SYMBOL CONDITION TA = 0°C +70°C TA = -40°C +105°C VCC VTH, RESET deasserted % ppm/°C V mA µA mA IOL 4.5 3 2 16 12 10 2 --- ----------------- --------------1 mA µA mA mA RESET Output Current High (push-pull active low, G698L) IOH RESET Output Current Low (push-pull active high, G698H) IOL RESET Output Current High (push-pull active high, G698H) RESET Open-Drain Output Leakage Current (G699L) IOH Note 1: Production testing done at TA = +25°C; limits over temperature guaranteed by design. Ver: 1.3 Jun 03, 2004 TEL: 886-3-5788833 http://www.gmt.com.tw 2 Global Mixed-mode Technology Inc. Selector Guide PART/SUFFIX G699L463T1U G699L438T1U G699L400T1U G699L330T1U G699L308T1U G699L293T1U G699L263T1U G698H463T1U G698H438T1U G698H400T1U G698H330T1U G698H308T1U G698H293T1U G698H263T1U G698L463T1U G698L438T1U G698L400T1U G698L330T1U G698L308T1U G698L293T1U G698L263T1U G698/G699 TOP MARK 699Gx 699Fx 699Ex 699Dx 699Cx 699Bx 699Ax 698Lx 698Kx 698Jx 698Nx 698Ix 698Hx 698Gx 698Fx 698Ex 698Dx 698Mx 698Cx 698Bx 698Ax RESET THRESHOLD (V) 4.60 4.32 3.96 3.30 3.10 2.91 2.64 4.60 4.32 3.96 3.30 3.10 2.91 2.64 4.60 4.32 3.96 3.30 3.10 2.91 2.64 OUTPUT TYPE Open-Drain RESET Open-Drain RESET Open-Drain RESET Open-Drain RESET Open-Drain RESET Open-Drain RESET Open-Drain RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Ver: 1.3 Jun 03, 2004 TEL: 886-3-5788833 http://www.gmt.com.tw 3 Global Mixed-mode Technology Inc. Typical Operating Characteristics G698/G699 (VCC = full range, TA = -40°C to +105°C, unless otherwise noted. Typical values are at TA = +25°C, VCC = 5V for 463/438/400/330 versions, VCC= 3.3V for 308/293 versions, and VCC = 3V for 263 version.) Supply Current vs. VCC 8 7 6 Supply Curremt vs. Temperature (No Load) 7 VCC=5V 6 Supply Current (µA) 5 4 VCC=2.5V VCC=3.3V Supply Current (µA) 5 4 3 2 1 0 0 0.6 1 1.2 1.5 1.8 2.1 2.4 2.7 3 3.2 3.3 3.4 3.5 3.7 3.9 4 4.5 5 5.5 6 3 2 1 0 -40 -20 0 20 40 60 80 VCC (V) Temperature (°C) Normalized Reset Threshold vs. Temperature 1.06 Normalized Ormalized V TH+ , VTH- (V) 1.05 1.04 1.03 1.02 1.01 1 0.99 0.98 0.97 0.96 -40 -30 -20 -10 0 10 20 27 30 40 50 60 70 80 90 0.1 0.0001 Output Time Delay vs. Capacitance 10000 VT Output Time Delay 1000 Delay between VCC>VTH to output change 100 VTH 10 1 Delay between VCC