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TCM809 Dataheets PDF



Part Number TCM809
Manufacturers TelCom Semiconductor
Logo TelCom Semiconductor
Description 3-PIN UP RESET MONITORS
Datasheet TCM809 DatasheetTCM809 Datasheet (PDF)

PRELIMINARY INFORMATION 1 TCM809 TCM810 3-PIN µP RESET MONITORS FEATURES s s s s s s s Precision VCC Monitor for 3.0V, 3.3V, 5.0V Nominal System V Supplies 140msec Guaranteed Minimum RESET, RESET Output Duration RESET Output Guaranteed to VCC = 1.0V (TCM809) Low 17µA Supply Current VCC Transient Immunity Small SOT-23B-3 Package No External Components GENERAL DESCRIPTION The TCM809 and TCM810 are cost-effective system supervisor circuits designed to monitor VCC in digital systems and provide a.

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PRELIMINARY INFORMATION 1 TCM809 TCM810 3-PIN µP RESET MONITORS FEATURES s s s s s s s Precision VCC Monitor for 3.0V, 3.3V, 5.0V Nominal System V Supplies 140msec Guaranteed Minimum RESET, RESET Output Duration RESET Output Guaranteed to VCC = 1.0V (TCM809) Low 17µA Supply Current VCC Transient Immunity Small SOT-23B-3 Package No External Components GENERAL DESCRIPTION The TCM809 and TCM810 are cost-effective system supervisor circuits designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components are required. The reset output is driven active within 20msec of V CC falling through the reset voltage threshold. Reset is maintained active for a minimum of 140msec after VCC rises above the reset threshold. The TCM810 has an active-high reset output while the TCM809 has an active-low reset output. The output of the TCM809 is guaranteed valid down to V CC = 1V. Both devices are available in a SOT-23B-3 package. The TCM809/810 are optimized to reject fast transient glitches on the VCC line. Low supply current of 17µA (VCC = 3.3V) makes these devices suitable for battery powered applications. 2 3 4 5 6 7 TYPICAL APPLICATIONS s s s s Computers Embedded Systems Battery Powered Equipment Critical µP Power Supply Monitoring TYPICAL OPERATING CIRCUIT VCC VCC VCC PROCESSOR RESET INPUT ORDERING INFORMATION Part No. TCM809xENB TCM810xENB Package SOT-23B-3 SOT-23B-3 Temp. Range – 40°C to +85°C – 40°C to +85°C NOTE: The "X" denotes a suffix for VCC threshold - see table below. RESET TCM809 GND Suffix GND Reset VCC Threshold (V) 4.63 4.38 3.08 2.93 2.63 PIN CONFIGURATION *SOT-23B-3 L M T S R GND 1 TCM809xENB TCM810xENB 3 VCC RESET (RESET) 2 NOTE: *SOT-23B-3 is equivalent to JEDEC (TO-236) ** () is for TCM810 TCM809/810-04 8/29/96 8 5-15 TELCOM SEMICONDUCTOR, INC. PRELIMINARY INFORMATION 3-PIN µP RESET MONITORS TCM809 TCM810 ABSOLUTE MAXIMUM RATINGS* Supply Voltage (VCC to GND) ................................ +6.0V RESET, RESET ............................ – 0.3V to (VCC + 0.3V) Input Current, VCC.. ..................................................20mA Output Current, RESET, RESET .............................20mA dV/dt (VCC) .......................................................... 100V/µS Operating Temperature Range ............... – 40°C to +85°C Power Dissipation (TA ≤ 70°C) SOT-23B-3 (derate 4mW/°C above +70°C) ... 230mW Storage Temperature Range ................ – 65°C to +150°C Lead Temperature (Soldering, 10 sec) ................. +260°C *This is a stress rating only and functional operation of the device at these or any other conditions above 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 = 5V, TA = Operating Temperature Range unless otherwise noted. Symbol Parameter VCC Range ICC VTH Supply Current Reset Threshold Test Conditions TA = 0°C to +70°C TA = – 40°C to +85°C TCM8xxL/M: VCC < 5.5V TCM8xxR/S/T: VCC < 3.6V (Note 2) TCM8xxL: TA = +25°C TA = – 40°C to +85°C TCM8xxM: TA = +25°C TA = – 40°C to +85°C TCM8xxT: TA = +25°C TA = – 40°C to +85°C TCM8xxS: TA = +25°C TA = – 40°C to +85°C TCM8xxR: TA = +25°C TA = – 40°C to +85°C (Note 2) VCC = VTH to (VTH – 100mV) Min 1.0 1.2 — — 4.56 4.50 4.31 4.25 3.04 3.00 2.89 2.85 2.59 2.55 — Typ — — 24 17 4.63 — 4.38 — 3.08 — 2.93 — 2.63 — 30 20 240 — — — — — — — — Max 5.5 5.5 60 50 4.70 4.75 4.45 4.50 3.11 3.15 2.96 3.00 2.66 2.70 — — 560 0.3 0.4 0.3 — — 0.3 0.4 — Unit V µA V Reset Threshold Tempco VCC to Reset Delay Reset Active Timeout Period RESET Output Voltage Low (TCM809) RESET Output Voltage High (TCM809) RESET Output Voltage Low (TCM810) RESET Output Voltage High (TCM810) ppm/°C µsec msec V VOL VOH VOL VOH NOTES: — 140 TCM809R/S/T: VCC = VTH min, ISINK = 1.2mA — TCM809L/M: VCC = VTH min, ISINK = 3.2mA — VCC > 1.0V, ISINK = 50µA — TCM809R/S/T: VCC > VTH max, ISOURCE = 500µA 0.8 VCC TCM809L/M: VCC > VTH max, ISOURCE = 800µA VCC – 1.5 TCM810R/S/T: VCC = VTH max, ISINK = 1.2mA — TCM810L/M: VCC = VTH max, ISINK = 3.2mA — 1.8 < VCC < VTH min, ISOURCE = 150µA 0.8 VCC V V V 1. Production testing done at TA = +25°C, over temperature limits guaranteed by design. 2. RESET output for TCM809, RESET Output for TCM810. PIN DESCRIPTION Pin No. (SOT-23B-3) 1 2 2 3 5-16 Symbol GND RESET (TCM809) RESET (TCM810) VCC Description Ground RESET output remains low while VCC is below the reset voltage threshold, and for 240msec (140msec min.) after VCC rises above reset threshold. RESET output remains high while VCC is below the reset voltage threshold, and for 240msec (140msec min.) after VCC rises above reset threshold. Supply voltage (Typ. +3.0V to +5.0V) TELCOM SEMICONDUCTOR, INC. 3-PIN µP RESET MONITORS PRELIMINARY INFORMATION 1 TCM809 TCM810 APPLICATIONS INFORMATION VCC Transient Rejection The TCM809/810 provid.


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