LTM2885 datasheet(3/22 Pages) LINER

3 / 22 page

LTM2885

2885fa

For more information www.linear.com/LTM2885

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Power Supply

VCC

VCC Supply Voltage

4.5

5.0

5.5

VL Supply Voltage

1.62

5.5

ICCPOFF

VCC Supply Current in Off Mode

ON = 0V

µA

ICCS

VCC Supply Current in On Mode

DE = 0V, RE = VL, No Load

VCC2

Regulated VCC2 Output Voltage,

Loaded

DE = 0V, RE = VL, ILOAD = 150mA

4.75

5.0

VCC2NOLOAD Regulated VCC2 Output Voltage,

No Load

DE = 0V, RE = VL, No Load

4.8

5.0

5.35

Efficiency

ICC2 = 100mA (Note 2)

ICC2S

VCC2 Short-Circuit Current

DE = 0V, RE = VL, VCC2 = 0V

200

Driver

|VOD|

Differential Driver Output Voltage R = ∞ (Figure 1)

R = 27Ω (RS485) (Figure 1)

R = 50Ω (RS422) (Figure 1)

2.1

VCC2

∆|VOD|

Difference in Magnitude of Driver

Differential Output Voltage for

Complementary Output States

R = 27Ω or R = 50Ω (Figure 1)

0.2

VOC

Driver Common Mode Output

Voltage

R = 27Ω or R = 50Ω (Figure 1)

∆|VOC|

Difference in Magnitude of Driver

Common Mode Output Voltage

for Complementary Output States

R = 27Ω or R = 50Ω (Figure 1)

0.2

IOZD

Driver Three-State (High

Impedance) Output Current on

Y and Z

DE = 0V, (Y or Z) = –7V, +12V

DE = 0V, (Y or Z) = –7V, +12V, H-Grade

±10

±50

µA

IOSD

Maximum Driver Short-Circuit

Current

–7V ≤ (Y or Z) ≤ 12V (Figure 2)

– 250

250

Receiver

RIN

Receiver Input Resistance

RE = 0V or VL, VIN = –7V, –3V, 3V, 7V, 12V (Figure 3)

RE = 0V or VL, VIN = –7V, –3V, 3V, 7V, 12V (Figure 3),

H-Grade

125

kΩ

RTE

Receiver Termination Resistance

Enabled

TE = VL, VAB = 2V, VB = –7V, 0V, 10V (Figure 8)

105

120

156

IIN

Receiver Input Current (A, B)

ON = 0V VCC2 = 0V or 5V, VIN = 12V (Figure 3)

ON = 0V VCC2 = 0V or 5V, VIN = 12V (Figure 3), H-Grade

125

250

µA

ON = 0V VCC2 = 0V or 5V, VIN = –7V (Figure 3)

ON = 0V VCC2 = 0V or 5V, VIN = –7V (Figure 3), H-Grade

–100

–145

µA

VTH

Receiver Differential Input

Threshold Voltage (A-B)

–7V ≤ B ≤ 12V

–0.2

0.2

∆VTH

Receiver Input Failsafe Hysteresis B = 0V

Receiver Input Failsafe Threshold B = 0V

–0.2

–0.05

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.

LTM2885 датащи(PDF) 3 Page - Linear Technology

LTM2885 датащи(HTML) 3 Page - Linear Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

датащи скачать

ссылки URL