UM807TBE

UM807 UNIONSEMI | Alldatasheet

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Technical content

Features

 Set-Top Boxes  Consumer Electronics  DVD Players  Cable/DSL Modems  MP3 Players  Industrial Equipments  Automotive  Medical Devices  No External Components  VCC Transient Immunity  Correct Logic Output Guaranteed to VCC=1.0V  Precision VCC Monitoring of 3.0V, 3.3V and 5.0V Supplies  2μA Supply Current  140ms Minimum Power-On Reset Pulse Width  Available in 3 Manual Reset Setup Periods (tMR): A: 10.08s B: 6.72s C: 1.68s  Available in 3 Output Configurations: Open-Drain Active-Low RESET Output(UM807); Push-Pull Active-Low RESET Output(UM821) Push-Pull Active-High RESET Output(UM822)  4-Pin SOT143 Package  Wide Operation Temperature: -40°C to +85°C

http://www.union-ic.com Rev.01 Jan.2015 2/17 UM807/821/822 Pin Configurations Top View

Ordering Information

XX: Output Type =07 Open-Drain Active Low =21 Push-Pull Active Low =22 Push-Pull Active High Z: Reset Threshold (V) =L 4.63 =M 4.38 =J 4.00 =T 3.08 =S 2.93 =R 2.63 =Z 2.32 T: Manual Reset Setup Period (s) =A 10.08 =B 6.72 =C 1.68 P: Package Type =E SOT143 2 3 4GND RESET (RESET) MR VCC ( ) are for UM822 1 2 MXXX M: Month Code UM807/821/822 SOT143

http://www.union-ic.com Rev.01 Jan.2015 3/17 UM807/821/822 Typical Operating Circuit VCC UM807 UM821 UM822 GND RESET (RESET) VCC GND RESET +3.3V MR μP Rpullup* *UM807 ONLY ( ) are for UM822 MR RESET MR SETUP PERIOD tMR RESET PULSE WIDTH 240ms RESET tPW

http://www.union-ic.com Rev.01 Jan.2015 4/17 UM807/821/822 Pin Description Pin Number Pin Name Function

1 GND Ground

(UM807/821) Active-Low P ush-Pull or Op en-Drain Output. RESET changes from high to low when V CC drops below its reset threshold and remains low for the 2 40ms reset timeout period after VCC exceeds their reset threshold. RESET is one-shot pulsed low for the reset timeout p eriod (140ms min) after the manual reset input is asserted longer than the specified setup period. For the open-drain output, use a pull-up resistor to VCC. See Figure 1. RESET (UM822) Active-High Push-Pull Output. RESET changes from low to high when VCC drops below its reset threshold and remains high for the 2 40ms reset timeout period after VCC exceeds their reset threshold. RESET is one-shot pulsed high for the reset timeout period (140ms min) after the manual reset input is asserted longer than the specified setup peri od. See Figure 1. 3 MR Manual Reset Input, Active Low. Internal 22kΩ pull-up to VCC. Pull MR low for the typical input pulse width (t MR) to one -shot pulse RESET for the reset pulse width (tPW). See Figure 2. 4 VCC +5V, +3.3V, or +3V Supply Voltage Absolute Maximum Ratings (Note 1) Symbol Parameter Value Unit VCC Supply Voltage -0.3 to +6.0 V RESET, RESET (push-pull) -0.3 to (VCC+0.3) RESET (open-drain) -0.3 to +6.0 MR -0.3 to +6.0 ICC Input Current, VCC, MR 20 mA IO Output Current, RESET, RESET 20 mA PD Continuous Power Dissipation (Derate 4mW/° C above 70° C) 320 mW TA Operating Temperature Range -40 to +105 °C TSTG Storage Temperature Range -65 to +160 °C Lead Temperature (soldering, 10s) +300 °C Note 1: Stresses beyond those listed under “Absolute maximum Ratings” may cause perman ent 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 are not implied. Exposure to absolute maximum rating co nditions for extended periods may affect device reliability.

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Electrical Characteristics

(VCC = 5V for L/M/J versions, V CC = 3.3V for T/S versions, V CC = 3V for R version, and VCC = 2.5V for Z version, TA = -40° C to +85° C, unless otherwise noted. Typical values are at TA = +25° C.) (Note 2) Symbol Parameter Conditions Min Typ Max Unit VCC Supply Voltage Range 1.0 5.5 V ICC Supply Current 2.0 5.0 μA VTH+ Reset Threshold L version TA=+25℃ 4.56 4.63 4.70 V M version TA=+25℃ 4.31 4.38 4.45 J version TA=+25℃ 3.93 4.00 4.06 T version TA=+25℃ 3.04 3.08 3.11 S version TA=+25℃ 2.89 2.93 2.96 R version TA=+25℃ 2.59 2.63 2.66 Z version TA=+25℃ 2.28 2.32 2.35 Reset Threshold Tempco 150 ppm/°C tRD VCC to Reset Delay (Note 3) 10 μs tRP Reset Active Timeout Period 140 240 560 ms tMR MR Minimum Pulse Width A 6.04 10.08 14.11 s B 4.03 6.72 9.41 C 1.01 1.68 2.35 tPW RESET Pulse Width 140 240 560 ms MR Glitch Immunity (Note 4) 100 ns VIH MR Input Threshold VCC > VTH(MAX) UM807/821/822L_E/M_E/J_E 2.3 V VIL 0.8 VIH VCC > VTH(MAX) UM807/821/822T_E/S_E/R_E/Z_E 0.7× VCC VIL 0.25× VCC MR Pull-Up Resistance 10 20 30 kΩ

http://www.union-ic.com Rev.01 Jan.2015 6/17 UM807/821/822 Electrical Characteristics (Continued) (VCC = 5V for L/M/J versions, V CC = 3.3V for T/S versi ons, VCC = 3V for R version, and VCC = 2.5V for Z version, TA = -40° C to +85° C, unless otherwise noted. Typical values are at TA = +25° C.) (Note 2) Symbol Parameter Conditions Min Typ Max Unit VOH RESET Output Voltage ISOURCE=150μA, 1.8V<VCC<VTH(MIN) UM822L_E/M_E/J_E/T_E/S_E/R_E/Z_E 0.8× VCC V VOL ISINK=1.2mA UM822T_E/S_E/R_E/Z_E 0.3 ISINK=3.2mA UM822L_E/M_E/J_E 0.4 VOH RESET Output Voltage ISOURCE=500μA, VCC>VTH(MAX) UM821T_E/S_E/R_E/Z_E 0.8× VCC V ISOURCE=800μA, VCC>VTH(MAX) UM821L_E/M_E/J_E VCC-1.5 VOL ISINK=1.2mA, VCC=VTH(MIN) UM807/821T_E/S_E/R_E/Z_E 0.3 ISINK=3.2mA, VCC=VTH(MIN) UM807/821L_E/M_E/J_E 0.4 ISINK=50μA, VCC>1.0V 0.3 Note 2: Production testing done at TA = +25° C; limits over temperature guaranteed by design only. Note 3: RESET output for UM807/821; RESET output for UM822. Note 4: “Glitches” of 100ns or less typically will not generate a reset pulse.

http://www.union-ic.com Rev.01 Jan.2015 7/17 UM807/821/822 Typical Operating Characteristics (TA = +25° C, unless otherwise noted.) VCC=3.3V Supply Current vs. Temperature (UM821R_E) Power-down RESET Delay vs. Temperature (UM821R_E) Power-up RESET Timeout vs. Temperature

http://www.union-ic.com Rev.01 Jan.2015 9/17 UM807/821/822 assert reset to prevent code execution errors during power-up, power-down, or brownout conditions. RESET is guaranteed to be a logic low for V CC > 1V . Once VCC exceeds the reset threshold, an internal timer keeps RESET low for the reset timeout period; after this interval, RESET goes high. If a brownout condition occurs (V CC dips below the reset threshold), RESET goes low. Any time VCC goes below the reset threshold, the internal timer resets to zero, and RESET goes low. The internal timer starts after VCC returns above the reset threshold, and RESET remains low for the reset timeout period. The manual reset input (MR ) can also initiate a reset. See the Manual Reset Input section. The UM822 has an active -high RESET output that is the inverse of the UM807/821’s RESET output. The UM807 uses an open -drain output, and the UM821/822 have a push -pull output stage. Connect a pull-up resistor on the UM807’s RESET output to any supply between 0 and 6V . Manual Reset Input Each device in the UM807/821/822 family includes one manual reset input, which must be held logic-low for an extended setup peri od (tMR) before the RESET output asserts. When valid manual reset input conditions/setup periods are met, the RESET output is one-shot pulse asserted low for a fixed reset pulse width (140ms min). Existing front -panel pushbutton switches (i.e., power on/off, channel up/down, or mode select) can be used to drive the manual reset inputs. The extended manual reset setup period prevents nuisance system resets during normal front-panel usage or resulting from inadvertent short-term pushbutton closure. This input has an internal 20kΩ pull-up resistor, so it can be left open if it is not used. MR can be driven with TTL or CMOS -logic levels, or with open -drain/collector outputs. Connect a normally open momentary switch from MR to GND to create a manual -reset function; external debounce circuitry is not required. If MR is driven from long cables or if the device is used in a noisy environment, connecting a 0.1μF capacitor from MR to ground provides additional noise immunity. Reset Threshold Accuracy The UM807/821/822 are ideal for systems using a 5V± 5% or 3V± 5% power supply with ICs specified for 5V± 10% or 3V± 10%, respectively. They are designed to meet worst -case specifications over temperature. The reset is guaranteed to assert after the power supply falls out of regulation, but before power drops below the minimum specified operat ing voltage range for the system ICs. The thresholds are pre -trimmed and exhibit tight distribution, reducing the range over which an undesirable reset may occur.

occurs depends on the pull-up resistor value and the voltage to which it is connected. Figure 6. UM807 Open-Drain RESET

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Package Information

e E D b2 b A C L Top View End View Side View DIMENSIONS Symbol MILLIMETERS INCHES Min Max Min Max A 0.763 1.220 0.031 0.049 A1 0.013 0.150 0.001 0.006 A2 0.750 1.070 0.030 0.043 b 0.300 0.510 0.012 0.020 b2 0.760 0.930 0.030 0.037 C 0.080 0.200 0.003 0.008 D 2.800 3.040 0.112 0.122 E 2.200 2.640 0.088 0.211 E1 1.200 1.400 0.048 0.056 e 1.920BSC 0.077BSC e1 0.200BSC 0.008BSC L1 0.540REF 0.022 L 0.400 0.600 0.016 0.024 Land Pattern 0.90 0.50 1.92 0.80 0.20 NOTES: 1. Compound dimension: 2.90× 1.30; 2. Unit: mm; 3. General tolerance ± 0.05mm unless otherwise specified; 4. The layout is just for reference. Tape and Reel Orientation XXX M

http://www.union-ic.com Rev.01 Jan.2015 14/17 UM807/821/822 Selection Table Part Number RESET Threshold (V) Timeout Period (ms) Manual Reset Setup Period (s) Output Type Marking Code Package Type Shipping Qty UM807LAE 4.63 240 10.08 Open-Drain, Active Low 7LA SOT143 3000pcs/7Inch Tape & Reel UM807MAE 4.38 240 Open-Drain, Active Low 7MA UM807JAE 4.00 240 Open-Drain, Active Low 7JA UM807TAE 3.08 240 Open-Drain, Active Low 7TA UM807SAE 2.93 240 Open-Drain, Active Low 7SA UM807RAE 2.63 240 Open-Drain, Active Low 7RA UM807ZAE 2.32 240 Open-Drain, Active Low 7ZA UM807LBE 4.63 240 6.72 Open-Drain, Active Low 7LB UM807MBE 4.38 240 Open-Drain, Active Low 7MB UM807JBE 4.00 240 Open-Drain, Active Low 7JB UM807TBE 3.08 240 Open-Drain, Active Low 7TB UM807SBE 2.93 240 Open-Drain, Active Low 7SB UM807RBE 2.63 240 Open-Drain, Active Low 7RB UM807ZBE 2.32 240 Open-Drain, Active Low 7ZB UM807LCE 4.63 240 1.68 Open-Drain, Active Low 7LC UM807MCE 4.38 240 Open-Drain, Active Low 7MC UM807JCE 4.00 240 Open-Drain, Active Low 7JC UM807TCE 3.08 240 Open-Drain, Active Low 7TC UM807SCE 2.93 240 Open-Drain, Active Low 7SC UM807RCE 2.63 240 Open-Drain, Active Low 7RC UM807ZCE 2.32 240 Open-Drain, Active Low 7ZC

http://www.union-ic.com Rev.01 Jan.2015 15/17 UM807/821/822 Selection Table (Continued) Part Number RESET Threshold (V) Timeout Period (ms) Manual Reset Setup Period (s) Output Type Marking Code Package Type Shipping Qty UM821LAE 4.63 240 10.08 Push-Pull, Active Low 1LA SOT143 3000pcs/7Inch Tape & Reel UM821MAE 4.38 240 Push-Pull, Active Low 1MA UM821JAE 4.00 240 Push-Pull, Active Low 1JA UM821TAE 3.08 240 Push-Pull, Active Low 1TA UM821SAE 2.93 240 Push-Pull, Active Low 1SA UM821RAE 2.63 240 Push-Pull, Active Low 1RA UM821ZAE 2.32 240 Push-Pull, Active Low 1ZA UM821LBE 4.63 240 6.72 Push-Pull, Active Low 1LB UM821MBE 4.38 240 Push-Pull, Active Low 1MB UM821JBE 4.00 240 Push-Pull, Active Low 1JB UM821TBE 3.08 240 Push-Pull, Active Low 1TB UM821SBE 2.93 240 Push-Pull, Active Low 1SB UM821RBE 2.63 240 Push-Pull, Active Low 1RB UM821ZBE 2.32 240 Push-Pull, Active Low 1ZB UM821LCE 4.63 240 1.68 Push-Pull, Active Low 1LC UM821MCE 4.38 240 Push-Pull, Active Low 1MC UM821JCE 4.00 240 Push-Pull, Active Low 1JC UM821TCE 3.08 240 Push-Pull, Active Low 1TC UM821SCE 2.93 240 Push-Pull, Active Low 1SC UM821RCE 2.63 240 Push-Pull, Active Low 1RC UM821ZCE 2.32 240 Push-Pull, Active Low 1ZC

http://www.union-ic.com Rev.01 Jan.2015 16/17 UM807/821/822 Selection Table (Continued) Part Number RESET Threshold (V) Timeout Period (ms) Manual Reset Setup Period (s) Output Type Marking Code Package Type Shipping Qty UM822LAE 4.63 240 10.08 Push-Pull, Active High 2LA SOT143 3000pcs/7Inch Tape & Reel UM822MAE 4.38 240 Push-Pull, Active High 2MA UM822JAE 4.00 240 Push-Pull, Active High 2JA UM822TAE 3.08 240 Push-Pull, Active High 2TA UM822SAE 2.93 240 Push-Pull, Active High 2SA UM822RAE 2.63 240 Push-Pull, Active High 2RA UM822ZAE 2.32 240 Push-Pull, Active High 2ZA UM822LBE 4.63 240 6.72 Push-Pull, Active High 2LB UM822MBE 4.38 240 Push-Pull, Active High 2MB UM822JBE 4.00 240 Push-Pull, Active High 2JB UM822TBE 3.08 240 Push-Pull, Active High 2TB UM822SBE 2.93 240 Push-Pull, Active High 2SB UM822RBE 2.63 240 Push-Pull, Active High 2RB UM822ZBE 2.32 240 Push-Pull, Active High 2ZB UM822LCE 4.63 240 1.68 Push-Pull, Active High 2LC UM822MCE 4.38 240 Push-Pull, Active High 2MC UM822JCE 4.00 240 Push-Pull, Active High 2JC UM822TCE 3.08 240 Push-Pull, Active High 2TC UM822SCE 2.93 240 Push-Pull, Active High 2SC UM822RCE 2.63 240 Push-Pull, Active High 2RC UM822ZCE 2.32 240 Push-Pull, Active High 2ZC

http://www.union-ic.com Rev.01 Jan.2015 17/17 UM807/821/822 IMPORTANT NOTICE The information in this document has been carefully reviewed and is believed to be accurate. Nonetheless, this document is subject to change without notice. Union assumes no responsibility for any inaccuracies that may be contained in this document, and makes no commitment to update or to keep current the contained information, o r to notify a person or organization of any update. Union reserves the right to make changes, at any time, in order to improve reliability, function or design and to attempt to supply the best product possible. Union Semiconductor, Inc Add: Unit 606, No.570 Shengxia Road, Shanghai 201210 Tel: 021-51093966 Fax: 021-51026018 Website: www.union-ic.com