LTM2884Y 데이터 시트보기 (PDF) - Linear Technology

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LTM2884Y

Isolated USB Transceiver with Isolated Power

Linear Technology 

LTM2884

Switching Characteristics The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VCC = 5V, VBUS = 5V, GND = GND2 = 0V, ON = VLO, unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

Low Speed USB

t LDR

t LR

t LF

tLPRR, tLPFF

Low Speed Data Rate

Rise Time

Fall Time

Propagation Delay

CL = 50pF to 450pF (Note 4)

Figure 2, CL = 50pF to 600pF

Figure 2, CL = 50pF to 600pF

Figure 2, CL = 50pF to 600pF

l 75

l 75

l

1.5

300

300

200 300

Mbps

ns

ns

ns

t LDJ1

Differential Jitter

To Next Transition (Note 2)

±45

ns

t LDJ2

Full Speed USB

Differential Jitter

To Paired Transitions (Note 2)

± 15

ns

t FDR

Full Speed Data Rate

CL = 50pF (Note 4)

t FR

Rise Time

Figure 3, CL = 50pF

t FF

Fall Time

Figure 3, CL = 50pF

l

4

l

4

12

Mbps

20

ns

20

ns

tFPRR, tFPFF

Propagation Delay

Figure 3, CL = 50pF

l 60

80

115

ns

t FDJ1

Differential Jitter

t FDJ2

Differential Jitter

Power Supply Generator

To Next Transition (Note 2)

To Paired Transitions (Note 2)

2

ns

1

ns

VCC2 – GND2 Supply Start-Up Time RLOAD = 50Ω, CLOAD = 100µF

l

(ON VLO, VCC2 to 4.5V)

RLOAD = 10Ω, CLOAD = 100µF, VCC = 12V

l

t WUSPND

Wake Up from Suspend Mode

Resume Signal, SPNDPWR = 0

l

ESD (HBM) (Note 2) Isolation Barrier

GND to GND2

2

5

ms

3

10

ms

0.25

10

µs

±15

kV

D1+, D1–, D2+, D2–

D1+/D1–

D2+/D2–

to

to

GND, VCC, VBUS, or VLO

GND2, VCC2, or VLO2

and

±15

kV

ON, SPNDPWR

±3

kV

Isolation Characteristics TA = 25°C.

SYMBOL

PARAMETER

Isolation Barrier: GND to GND2

VISO

Rated Dielectric Insulation Voltage

(Notes 6, 7)

Common Mode Transient Immunity

VIORM

Maximum Working Insulation Voltage

CONDITIONS

1 Minute (Derived from 1 Second Test)

1 Second (Note 5)

VBUS = VCC = 5V, ON = 3.3V, 1000V in 33ns

Transient Between GND and GND2 (Note 2)

(Notes 2, 5)

Partial Discharge

VPR = 750VRMS (Note 5)

CTI

Comparative Tracking Index

IEC 60112 (Note 2)

Depth of Erosion

IEC 60112 (Note 2)

DTI

Distance Through Insulation

(Note 2)

Input to Output Resistance

(Notes 2, 5)

Input to Output Capacitance

(Notes 2, 5)

Creepage Distance

(Notes 2, 5)

MIN TYP MAX

2500

3000

±30

560

400

<5

600

0.017

0.1

1012

13

9.48

UNITS

VRMS

VRMS

kV/µs

VPEAK

VRMS

pC

VRMS

mm

mm

Ω

pF

mm

2884f

4

For more information www.linear.com/LTM2884

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