Datasheet LTM2881 (Analog Devices) - 6

制造商Analog Devices
描述Complete Isolated RS485/RS422 μModule Transceiver + Power
页数 / 页24 / 6 — swiTching characTerisTics. The. denotes the specifications which apply …
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swiTching characTerisTics. The. denotes the specifications which apply over the full operating

swiTching characTerisTics The denotes the specifications which apply over the full operating

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LTM2881
swiTching characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. LTM2881-3 VCC = 3.3V, LTM2881-5 VCC = 5.0V, VL = 3.3V, GND = GND2 = 0V, ON = VL unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
tZLD, tZHD, Driver Output Enable or Disable RL = 500Ω, CL = 50pF l 400 ns tLZD, tHZD Time (Figure 5)
Receiver
tPLHR Receiver Input to Output CL = 15pF, VCM = 2.5V, |VAB| = 1.4V, l 100 140 ns tPHLR tR and tF < 4ns, (Figure 6) tSKEWR Differential Receiver Skew CL = 15pF l 1 8 ns |tPLHR - tPHLR| (Figure 6) tRR Receiver Output Rise or Fall Time CL = 15pF l 3 12.5 ns tFR (Figure 6) tZLR, tZHR, Receiver Output Enable Time RL =1kΩ, CL = 15pF l 50 ns tLZR, tHZR (Figure 7) tRTEN, tRTZ Termination Enable or Disable RE = 0V, DE = 0V, VAB = 2V, VB = 0V (Figure 8) l 100 µs Time
Generic Logic Input
tPLHL1 DIN to DOUT Input to Output CL = 15pF, l 60 100 ns tPHLL1 tR and tF < 4ns
Power Supply Generator
VCC2–GND2 Supply Start-Up ON V Time L, No Load l 325 800 µs (0V to 4.5V)
isolaTion characTerisTics TA = 25°C, LTM2881-3 VCC = 3.3V, LTM2881-5 VCC = 5.0V, VL = 3.3V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VISO Rated Dielectric Insulation Voltage 1 Minute (Derived from 1 Second Test) 2500 VRMS 1 Second (Notes 5, 6) ±4400 VDC Common Mode Transient Immunity LTM2881-3 VCC = 3.3V, LTM2881-5 VCC = 5V, ±30 kV/µs VL = ON = 3.3V, VCM = 1kV, ∆t = 33ns (Note 2) VIORM Maximum Working Insulation Voltage (Notes 2, 5) 560 VPEAK 400 VRMS Partial Discharge VPR = 1050 VPEAK (Note 2) 5 pC CTI Comparative Tracking Index IEC 60112 (Note 2) 600 VRMS Depth of Erosion IEC 60112 (Note 2) 0.017 mm DTI Distance Through Insulation (Note 2) 0.06 mm Input to Output Resistance (Notes 2, 5) 109 Ω Input to Output Capacitance (Notes 2, 5) 6 pF Creepage Distance (Notes 2, 5) 9.48 mm
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
This µModule transceiver includes overtemperature protection that may cause permanent damage to the device. Exposure to any Absolute is intended to protect the device during momentary overload conditions. Maximum Rating condition for extended periods may affect device Junction temperature will exceed 125°C when overtemperature protection reliability and lifetime. is active. Continuous operation above specified maximum operating
Note 2:
Guaranteed by design and not subject to production test. junction temperature may result in device degradation or failure.
Note 3:
Maximum Data rate is guaranteed by other measured parameters
Note 5:
Device considered a 2-terminal device. Pin group A1 through B8 and is not tested directly. shorted together and pin group K1 through L8 shorted together.
Note 6:
The rated dielectric insulation voltage should not be interpreted as a continuous voltage rating. 2881fi 6 For more information www.linear.com/LTM2881 Document Outline Features Applications Typical Application Description 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 Applications Package Description Revision History Typical Application Related Parts