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LS7055 датащи(PDF) 3 Page - LSI Computer Systems |
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LS7055 датащи(HTML) 3 Page - LSI Computer Systems |
3 / 6 page MAXIMUM RATINGS PARAMETER SYMBOL VALUE UNITS Storage Temperature Tstg -65 to +150 °C Operating Temperature TA -25 to +70 °C Voltage (any pin to Vss) Vmax -30 to +0.5 V DC ELECTRICAL CHARACTERISTICS (VDD = VGG = 0V, Vss = +4.75 to +15V, -25°C ≤ TA ≤ +70°C unless otherwise specified.) PARAMETER SYM MIN MAX UNITS Quescent Supply Current - - - - (All Input Pins Tied to Vss) (All Output Pins Left Open) Vss = 4.75V IDD - 20 mA Vss = 15V IDD - 25 mA Input Capacitance All Inputs Cin - 10 pF Hysteresis On Count Input 30%(Vss - VDD) - V Noise Immunity All Other Inputs VNL 30%(Vss - VDD) - V VNH 30%(Vss - VDD) - V Output Levels All Outputs VOL - 0.5 V (All Output Pins Left Open) VOH Vss - 1 - V 7 Segment Output Current Source Current Vss = 4.75V, VOUT = 0.7V, 70°C ISEG 0.3 - mA Vss = 4.75V, VOUT = 0.7V, 25°C ISEG 0.4 - mA Vss = 10V, VOUT = 7V, 25°C ISEG 2.0 - mA Vss = 15V, VOUT = 13V, 70°C ISEG 3.0 - mA Note: Limit Segment Source Current to 4.5mA max. Sink Current (VOUT = 0.4V) Vss = 4.75V, 25°C ISEG -21 - µA Vss = 10V, 25°C ISEG -17 - µA Vss = 15V, 25°C ISEG -15 - µA Vss = 15V, 70°C ISEG -10 - µA BCD, Zero Detect, Mainsignal and Presignal Output Current Source Current Vss = 4.75V, VOUT = 4.5V, 70°C IoH 0.10 - mA Vss = 4.75V, VOUT = 4.5V, 25°C IoH 0.13 - mA Vss = 10V, VOUT = 9.0V, 25°C IoH 0.7 - mA Vss = 15V, VOUT = 13V, 25°C IoH 2.5 - mA Note: Limit Segment Source Current to 4.5mA max. Sink Current (VOUT = 0.4V) Vss = 4.75V, 25°C IoL -7.5 - µA Vss = 10V, 25°C IoL -6.0 - µA Vss = 15V, 25°C IoL -5.5 - µA Vss = 15V, 70°C IoL -4.0 - µA Digit Select Output Current Source Current Vss = 4.75V, VOUT = 4.5V, 70°C IoH 0.28 - mA Vss = 4.75V, VOUT = 4.5V, 25°C IoH 0.35 - mA Vss = 10V, VOUT = 9V, 25°C IoH 2.0 - mA Vss = 15V, VOUT = 13.5V, 70°C IoH 7.0 - mA Note: Limit digit select current to 10mA. Sink Current (VOUT = 0.4V) Vss = 4.75V, 25°C IoL -15 - µA Vss = 10V, 25°C IoL -12 - µA Vss = 15V, 25°C IoL -11 - µA Vss = 15V, 70°C IoL - µA DYNAMIC ELECTRICAL CHARACTERISTICS (VDD = VGG = 0V, Vss = +4.75 to +15V, -25°C ≤ TA ≤ +70°C unless otherwise specified.) PARAMETER SYM MIN MAX UNITS Count Input Frequency Vss = 4.75V Fc DC 250 kHz Vss = 10V Fc DC 175 kHz Vss = 15V Fc DC 125 kHz Pulse Width Vss = 4.75V Tcw 2 - µs Vss = 10V Tcw 2.8 - µs Vss = 15V Tcw 4 - µs Rise Time Tcr - ∞ µs Fall Time Tcf - ∞ µs Scan Input Frequency Fsc DC 100 kHz Divide Control Set-Up Time Tds 2 - µs Hold Time Tdh 8 - µs Reset Pulse Width ** Trpw 2 - µs Reset Set Up Time Trs 0 - µs Hold Time Trh 6 - µs Inhibit Internal Reset Set Up Time Tis 0 - µs Hold Time * Tirh 3 - µs Preset Pulse Width ** Tppw 2 - µs Preset Enable Set Up Time Tips 0 - µs Hold Time * Tiph 6 - µs Data Transfer Pulse Width ** Tdtw 2 - µs Data Transfer Set Up Time Tdts 0 - µs Hold Time Tdth 6 - µs Up/Down Set Up Time Tuds 0 - µs Hold Time Tud 10 - µs Count Inhibit Set Up Time Tcs 2 - µs Hold Time Tch 10 - µs Data Outputs (CL = 10pF) Rise Time Tdr - 1.0 µs Fall Time Vss = 4.75V Tdf - 2.0 µs Vss = 10V Tdf - 3.0 µs Vss = 15V Tdf - 4.0 µs Digit Select Outputs Guard Band Time within 7 segment & BCD outputs Tgb 0.5 - µs See Figure 3 Main Signal, Presignal, Zero Detect Outputs delay with respect to positive edge of Count Input Tdo - 3 µs Set-Up and Hold times are defined with respect to positive edge of count input except where indicated by asterisks. * Indicates a hold time which must last for at least one whole count cycle plus 5µs past the next positive edge of count input. ** Reset, Preset and Data Transfer Pulse Width is as specified except if applied when a count input is going positive. In that case the set-up and hold times govern. 7055-012703-3 The information included herein is believed to be accurate and reliable. However, LSI Computer Systems, Inc. assumes no responsibilities for inaccuracies, nor for any infringements of patent rights of others which may result from its use. |
Аналогичный номер детали - LS7055 |
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Аналогичное описание - LS7055 |
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