SS8037L308GT71

SS8037/8(G) Microprocessor Reset IC FEATURES Precision monitoring of +3V, +3.3V, and +5V power-supply voltages DESCRIPTION The SS8037/8 are microprocessor (µP) supervisory circuits used to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components 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, keeping it asserted for at least 140ms after VCC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available. The SS8038L has an open-drain output stage, while the SS8037H/L have push-pull outputs. The SS8038L’s open-drain RESET output requires a pull-up resistor that can be connected to a voltage higher than VCC. The SS8037L has an active-low RESET output, while the SS8037H 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 1V. Low supply current makes the SS8037/8 ideal for use in portable equipment. They are available in a 3-pin SOT23-3 package. Fully specified over temperature Available in three output configurations Push-pull RESET output (SS8037L) Push-pull RESET output (SS8037H) Open-drain RESET output (SS8038L) Power-on reset pulse width of 140ms min Supply current of 10µA Guaranteed reset valid to VCC = +1V Power supply transient immunity No external components SOT23-3 package APPLICATIONS Computers Controllers Intelligent instruments Critical µP and µC power monitoring Portable / battery-powered equipment Automotive This device is supplied with Pb-free lead finish (second-level interconnect). PIN CONFIGURATION 3 VCC TYPICAL APPLICATION V CC V CC * R PULL-UP SS8037/8 1 2 RESET (RESET) GND µP RESET RESET INPUT GND SOT23-3 *SS8038 ONLY 10/6/2004 Rev.2.20 www.SiliconStandard.com 1 of 9 SS8037/8(G) ORDERING INFORMATION SS803xxxxxGT7x Pin Option GT7: Pb-free SOT-23-3 Threshold Voltage Option PART NUMBER SS8037L : Push-Pull Active Low Output SS8037H : Push-Pull Active High Output SS8038L : Open-Drain Output THRESHOLD VOLTAGE OPTION * xxx specifies the threshold voltage. e.g. 263 denotes the 2.63V threshold voltage. PIN OPTION 1 1: 2: 3: 4: 5: 6: RESET RESET 2 GND VCC RESET 3 VCC GND VCC RESET RESET GND GND VCC VCC VCC GND RESET GND *RESET for SS8037H SELECTION GUIDE AND MARKING INFORMATION PART/SUFFIX SS8038L463GT71 SS8038L438GT71 SS8038L400GT71 SS8038L308GT71 SS8038L293GT71 SS8038L263GT71 SS8037H463GT71 SS8037H438GT71 SS8037H400GT71 SS8037H308GT71 SS8037H293GT71 SS8037H263GT71 SS8037L463GT71 SS8037L438GT71 SS8037L400GT71 SS8037L308GT71 SS8037L293GT71 SS8037L263GT71 RESET THRESHOLD (V) 4.63 4.38 4.00 3.08 2.93 2.63 4.63 4.38 4.00 3.08 2.93 2.63 4.63 4.38 4.00 3.08 2.93 2.63 OUTPUT TYPE Open-Drain Open-Drain Open-Drain Open-Drain Open-Drain Open-Drain 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 TOP MARK 689Fx 689Ex 689Dx 689Cx 689Bx 689Ax 688Lx 688Kx 688Jx 688Ix 688Hx 688Gx 688Fx 688Ex 688Dx 688Cx 688Bx 688Ax Note: T71: SOT23 pin-out option 1 Not all product options are released for mass production, please contact Silicon Standard for availability. 10/6/2004 Rev.2.20 www.SiliconStandard.com 2 of 9 SS8037/8(G) SELECTION GUIDE AND MARKING INFORMATION (cont.) PART/SUFFIX SS8038L463GT72 SS8038L438GT72 SS8038L400GT72 SS8038L308GT72 SS8038L293GT72 SS8038L263GT72 SS8037H463GT72 SS8037H438GT72 SS8037H400GT72 SS8037H308GT72 SS8037H293GT72 SS8037H263GT72 SS8037L463GT72 SS8037L438GT72 SS8037L400GT72 SS8037L308GT72 SS8037L293GT72 SS8037L263GT72 RESET THRESHOLD (V) 4.63 4.38 4.00 3.08 2.93 2.63 4.63 4.38 4.00 3.08 2.93 2.63 4.63 4.38 4.00 3.08 2.93 2.63 OUTPUT TYPE Open-Drain Open-Drain Open-Drain Open-Drain Open-Drain Open-Drain 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 TOP MARK 687Fx 687Ex 687Dx 687Cx 687Bx 687Ax 686Lx 688Kx 6 686Jx 686Ix 686Hx 686Gx 686Fx 686Ex 686Dx 686Cx 686Bx 686Ax Note: T72: SOT23 pin-out option 2 Not all product options are released for mass production, please contact Silicon Standard for availability. PART/SUFFIX SS8038L463GT73 SS8038L438GT73 SS8038L400GT73 SS8038L308GT73 SS8038L293GT73 SS8038L263GT73 SS8037H463GT73 SS8037H438GT73 SS8037H400GT73 SS8037H308GT73 SS8037H293GT73 SS8037H263GT73 SS8037L463GT73 SS8037L438GT73 SS8037L400GT73 SS8037L308GT73 SS8037L293GT73 SS8037L263GT73 RESET THRESHOLD (V) 4.63 4.38 4.00 3.08 2.93 2.63 4.63 4.38 4.00 3.08 2.93 2.63 4.63 4.38 4.00 3.08 2.93 2.63 OUTPUT TYPE Open-Drain Open-Drain Open-Drain Open-Drain Open-Drain Open-Drain 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 691Fx 691Ex 691Dx 691Cx 691Bx 691Ax 690Lx 690Kx 690Jx 690Ix 690Hx 690Gx 690Fx 690Ex 690Dx 690Cx 690Bx 690Ax Note: T73: SOT23 pin-out option 3 Not all product options are released for mass production, please contact Silicon Standard for availability. 10/6/2004 Rev.2.20 www.SiliconStandard.com 3 of 9 SS8037/8(G) ABSOLUTE MAXIMUM RATINGS All terminal voltages with respect to GND VCC.……………………………..…….…….-0.3V to +6.0V 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 Continuous Power Dissipation (TA = +70°C) 3-Pin SOT23 (derate 4mW/°C above +70°C)….320mW Operating Temperature Range …........-40°C to +105°C Storage Temperature Range..….….….-65°C to +150°C Lead Temperature (soldering, 10s) ..…....…......+300°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 (SOT-23) ICC SYMBOL TA = 0°C +70°C TA = -40°C +105°C CONDITION MIN 1.0 1.2 TYP MAX UNITS 5.5 5.5 22 10 30 23 4.70 4.75 4.86 4.38 4.45 4.50 4.56 4.00 4.06 4.10 4.20 3.08 3.11 3.15 3.23 2.93 2.96 3.00 3.08 2.63 2.66 2.70 2.76 V V µA TA = -40°C +105°C VCC