Datasheet LTM2885 (Analog Devices) - 3
| Fabricante | Analog Devices |
| Descripción | 6500VRMS Isolated RS485/RS422 μModule Transceiver + Power |
| Páginas / Página | 22 / 3 — ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply … |
| Formato / tamaño de archivo | PDF / 1.1 Mb |
| Idioma del documento | Inglés |
ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply over the full operating
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LTM2885
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 5.0V, VL = 3.3V, GND = GND2 = 0V, ON = VL unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Power Supply
VCC VCC Supply Voltage l 4.5 5.0 5.5 V VL VL Supply Voltage l 1.62 5.5 V ICCPOFF VCC Supply Current in Off Mode ON = 0V l 0 10 µA ICCS VCC Supply Current in On Mode DE = 0V, RE = VL, No Load l 38 50 mA VCC2 Regulated VCC2 Output Voltage, DE = 0V, RE = VL, ILOAD = 150mA l 4.75 5.0 V Loaded VCC2NOLOAD Regulated VCC2 Output Voltage, DE = 0V, RE = VL, No Load 4.8 5.0 5.35 V No Load Efficiency ICC2 = 100mA (Note 2) 50 % ICC2S VCC2 Short-Circuit Current DE = 0V, RE = VL, VCC2 = 0V 200 mA
Driver
|VOD| Differential Driver Output Voltage R = ∞ (Figure 1) l VCC2 V R = 27Ω (RS485) (Figure 1) l 2.1 VCC2 V R = 50Ω (RS422) (Figure 1) l 2.1 VCC2 V ∆|VOD| Difference in Magnitude of Driver R = 27Ω or R = 50Ω (Figure 1) l 0.2 V Differential Output Voltage for Complementary Output States VOC Driver Common Mode Output R = 27Ω or R = 50Ω (Figure 1) l 3 V Voltage ∆|VOC| Difference in Magnitude of Driver R = 27Ω or R = 50Ω (Figure 1) l 0.2 V Common Mode Output Voltage for Complementary Output States IOZD Driver Three-State (High DE = 0V, (Y or Z) = –7V, +12V l ±10 µA Impedance) Output Current on DE = 0V, (Y or Z) = –7V, +12V, H-Grade l ±50 µA Y and Z IOSD Maximum Driver Short-Circuit –7V ≤ (Y or Z) ≤ 12V (Figure 2) l – 250 250 mA Current
Receiver
RIN Receiver Input Resistance RE = 0V or VL, VIN = –7V, –3V, 3V, 7V, 12V (Figure 3) l 96 125 kΩ RE = 0V or VL, VIN = –7V, –3V, 3V, 7V, 12V (Figure 3), l 48 125 kΩ H-Grade RTE Receiver Termination Resistance TE = VL, VAB = 2V, VB = –7V, 0V, 10V (Figure 8) l 105 120 156 Ω Enabled IIN Receiver Input Current (A, B) ON = 0V VCC2 = 0V or 5V, VIN = 12V (Figure 3) l 125 µA ON = 0V VCC2 = 0V or 5V, VIN = 12V (Figure 3), H-Grade l 250 µA ON = 0V VCC2 = 0V or 5V, VIN = –7V (Figure 3) l –100 µA ON = 0V VCC2 = 0V or 5V, VIN = –7V (Figure 3), H-Grade l –145 µA VTH Receiver Differential Input –7V ≤ B ≤ 12V l –0.2 0.2 V Threshold Voltage (A-B) ∆VTH Receiver Input Failsafe Hysteresis B = 0V 25 mV Receiver Input Failsafe Threshold B = 0V –0.2 –0.05 0 V 2885fa For more information www.linear.com/LTM2885 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Switching Characteristics Isolation Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuits Functional Table Applications Information Typical Application Related Parts
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 5.0V, VL = 3.3V, GND = GND2 = 0V, ON = VL unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Power Supply
VCC VCC Supply Voltage l 4.5 5.0 5.5 V VL VL Supply Voltage l 1.62 5.5 V ICCPOFF VCC Supply Current in Off Mode ON = 0V l 0 10 µA ICCS VCC Supply Current in On Mode DE = 0V, RE = VL, No Load l 38 50 mA VCC2 Regulated VCC2 Output Voltage, DE = 0V, RE = VL, ILOAD = 150mA l 4.75 5.0 V Loaded VCC2NOLOAD Regulated VCC2 Output Voltage, DE = 0V, RE = VL, No Load 4.8 5.0 5.35 V No Load Efficiency ICC2 = 100mA (Note 2) 50 % ICC2S VCC2 Short-Circuit Current DE = 0V, RE = VL, VCC2 = 0V 200 mA
Driver
|VOD| Differential Driver Output Voltage R = ∞ (Figure 1) l VCC2 V R = 27Ω (RS485) (Figure 1) l 2.1 VCC2 V R = 50Ω (RS422) (Figure 1) l 2.1 VCC2 V ∆|VOD| Difference in Magnitude of Driver R = 27Ω or R = 50Ω (Figure 1) l 0.2 V Differential Output Voltage for Complementary Output States VOC Driver Common Mode Output R = 27Ω or R = 50Ω (Figure 1) l 3 V Voltage ∆|VOC| Difference in Magnitude of Driver R = 27Ω or R = 50Ω (Figure 1) l 0.2 V Common Mode Output Voltage for Complementary Output States IOZD Driver Three-State (High DE = 0V, (Y or Z) = –7V, +12V l ±10 µA Impedance) Output Current on DE = 0V, (Y or Z) = –7V, +12V, H-Grade l ±50 µA Y and Z IOSD Maximum Driver Short-Circuit –7V ≤ (Y or Z) ≤ 12V (Figure 2) l – 250 250 mA Current
Receiver
RIN Receiver Input Resistance RE = 0V or VL, VIN = –7V, –3V, 3V, 7V, 12V (Figure 3) l 96 125 kΩ RE = 0V or VL, VIN = –7V, –3V, 3V, 7V, 12V (Figure 3), l 48 125 kΩ H-Grade RTE Receiver Termination Resistance TE = VL, VAB = 2V, VB = –7V, 0V, 10V (Figure 8) l 105 120 156 Ω Enabled IIN Receiver Input Current (A, B) ON = 0V VCC2 = 0V or 5V, VIN = 12V (Figure 3) l 125 µA ON = 0V VCC2 = 0V or 5V, VIN = 12V (Figure 3), H-Grade l 250 µA ON = 0V VCC2 = 0V or 5V, VIN = –7V (Figure 3) l –100 µA ON = 0V VCC2 = 0V or 5V, VIN = –7V (Figure 3), H-Grade l –145 µA VTH Receiver Differential Input –7V ≤ B ≤ 12V l –0.2 0.2 V Threshold Voltage (A-B) ∆VTH Receiver Input Failsafe Hysteresis B = 0V 25 mV Receiver Input Failsafe Threshold B = 0V –0.2 –0.05 0 V 2885fa For more information www.linear.com/LTM2885 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Switching Characteristics Isolation Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuits Functional Table Applications Information Typical Application Related Parts