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TC54VN2802EMBSTP Datasheet(PDF) 3 Page - TelCom Semiconductor, Inc |
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TC54VN2802EMBSTP Datasheet(HTML) 3 Page - TelCom Semiconductor, Inc |
3 / 3 page 4-281 TELCOM SEMICONDUCTOR, INC. 7 6 5 4 3 1 2 8 TC54 VOLTAGE DETECTOR TIMING CHART MARKING 8 12 4 7 11 3 6 10 2 5 9 1 VIN DETECT VOLTAGE VDET MINIMUM OPERATING VOLTAGE VHYST VDET OUTPUT VOLTAGE RELEASE VOLTAGE RESET VOLTAGE OR GROUND LEVEL GROUND LEVEL + – = output (Nch or CMOS) plus first voltage digit 23 45 6 Nch M N P R S CMOS C D E F H ex: CMOS 3.x = kkkk = first voltage decimal (0-9) ex: CMOS 3.4 = kkkk & = assembly lot number D D4 , & = 54_ (fixed) = output (C = CMOS, N = Nch) = first voltage digit (2-6) = first voltage decimal (0-9) = extra feature code : fixed : 0 = detecting accuracy 1 = ± 1.0% (custom), 2 = ± 2.0% (standard) , , & = assembly lot number SOT-89-3 SOT-23A-3 TO-92 DESCRIPTION OF OPERATION Refer to the Timing Chart below. In normal steady-state operation, when VIN > V – DET, the output will be at a logic high. In the case of the TC54V, this is an open-drain condition. If and when the input falls below V – DET, the output will pull down (Logic 0) to VSS. Generally, VOUT can pull down to within 0.5V of VSS at rated output current and input voltage. (See the Electrical Characteristics section). The output, VOUT, will stay valid until the input voltage falls below the Minimum Operating Voltage, VIN(MIN), of 1.5V. Below this minimum operating voltage, the output is undefined. During power-up or anytime VIN has fallen below VIN (MIN), VOUT will remain undefined until VIN rises above VIN(MIN), at which time the output will become valid. VOUT will be in its active low state while VIN(MIN) < VIN < V+DET. (V+DET = V – DET + VHYST). If and when the input rises above V + DET, the output will assume its inactive state. (High for TC54VC, open-drain for TC54VN). APPLICATIONS Refer to TelCom Semiconductor Application Note #2, Using the TC54 Voltage Detector. |
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