MAX3440E(2002) Просмотр технического описания (PDF) - Maxim Integrated

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MAX3440E
(Rev.:2002)

±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers

Maxim Integrated 

±15kV ESD-Protected, ±60V Fault-Protected,

10Mbps, Fail-Safe RS-485/J1708 Transceivers

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC = +4.75V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

RECEIVER LOGIC

Output High Voltage

Output Low Voltage

VOH

VOL

Figure 2, IOH = -1.6mA

Figure 2, IOL = 1mA

VCC - 0.6

0.4

Three-State Output Current at

Receiver

IOZR 0 ≤ VA, B ≤ VCC

±1

Receiver Input Resistance

RIN -7V ≤ VCM ≤ +12V

48

Receiver Output Short-Circuit

Current

IOSR 0 ≤ VRO ≤ VCC

±95

CONTROL

Control Input High Voltage

VCIH DE, DE, RE, DE/RE

2

Input Current Latch During First

Rising Edge

IIN

DE, DE/RE, RE

90

SUPPLY CURRENT

MAX3440E (DE/RE = VCC),

No load,

MAX3442E (DE = VCC,

RE = GND),

30

Normal Operation

IQ

DI = VCC MAX3444E (DE = RE = GND)

or GND MAX3441E (DE/RE = VCC),

MAX3443E (DE = VCC,

10

RE = GND)

DE = GND, RE = VCC (MAX3442E/

20

MAX3443E)

Supply Current in Shutdown Mode

ISHDN DE = GND, RE = VCC, TA = +25°C

10

(MAX3442E/MAX3443E)

DE = RE = VCC (MAX3444E)

100

DE = RE = VCC, TA = +25°C (MAX3444E)

10

Supply Current with Output

Shorted to ±60V

ISHRT

DE = GND, RE = GND, no load

output in three-state (MAX3443E)

±15

PROTECTION SPECIFICATIONS

(VCC = +4.75V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

Overvoltage Protection

ESD Protection

A, B; RSOURCE = 0, RL = 54Ω

A, B

Human Body Model

±60

±15

FAULT DETECTION

Receiver Differential Threshold

Receiver Differential Threshold

FDIPH

FDIPL

VCM = 0, high limit

VCM = 0, low limit

270

-450

450

-270

Fault-Detection Common-Mode

Input Voltage Positive

12

Fault-Detection Common-Mode

Input Voltage Negative

-7

UNITS

V

V

µA

kΩ

mA

V

µA

mA

µA

mA

UNITS

V

kV

mV

mV

V

V

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