LTC2854/LTC2855

3

285455fc

For more information www.linear.com/LTC2854

The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C, VCC = 3.3V unless otherwise noted (Note 2).

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Driver

|VOD|

Differential Driver Output Voltage

R = ∞, VCC = 3V (Figure 1)

R = 27Ω, VCC = 3V (Figure 1)

R = 50Ω, VCC = 3.13V (Figure 1)

l

l

l

1.5

2

VCC

VCC

VCC

V

V

V

D|VOD|

Change in Magnitude of Driver

Differential Output Voltage for

Complementary Output States

R = 27Ω or R = 50Ω (Figure 1)

l

0.2

V

VOC

Driver Common Mode Output Voltage

R = 27Ω or R = 50Ω (Figure 1)

l

3

V

D|VOC|

Change in Magnitude of Driver

Common Mode Output Voltage for

Complementary Output States

R = 27Ω or R = 50Ω (Figure 1)

l

0.2

V

IOZD

Driver Three-State (High Impedance)

Output Current on Y and Z

DE = OV, (Y or Z) = –7V, 12V (LTC2855)

H-Grade

l

l

±10

±50

µA

µA

IOSD

Maximum Driver Short-Circuit Current

–7V ≤ (Y or Z) ≤ 12V (Figure 2)

l

–250

180

±250

300

mA

mA

Receiver

IIN

Receiver Input Current (A, B)

DE = TE = 0V, VCC = 0V or 3.3V, VIN = 12V

(Figure 3) (C-, I-Grade)

DE = TE = 0V, VCC = 0V or 3.3V, VIN = –7V,

(Figure 3) (C-, I-Grade)

l

l

–100

125

µA

µA

DE = TE = 0V, VCC = 0V or 3.3V, VIN = 12V

(Figure 3) (H-Grade)

DE = TE = 0V, VCC = 0V or 3.3V, VIN = –7V,

(Figure 3) (H-Grade)

l

l

–145

250

µA

µA

RIN

Receiver Input Resistance

RE = VCC or 0V, DE = TE = 0V,

VIN = –7V, –3V, 3V, 7V, 12V (Figure 3)

(C-, I-Grade)

l

96

125

kΩ

RE = VCC or 0V, DE = TE = 0V,

VIN = –7V, –3V, 3V, 7V, 12V (Figure 3)

(H-Grade)

l

48

125

kΩ

VTH

Receiver Differential Input Threshold

Voltage

–7V ≤ B ≤ 12V

l

±0.2

V

DVTH

Receiver Input Hysteresis

B = 0V

25

mV

VOH

Receiver Output HIGH Voltage

I(RO) = –4mA, A-B = 200mV, VCC = 3V

l

2.4

V

VOL

Receiver Output LOW Voltage

I(RO) = 4mA, A-B = –200mV, VCC = 3V

l

0.4

V

IOZR

Receiver Three-State (High Impedance)

Output Current on RO

RE = VCC, 0V ≤ RO ≤ VCC

l

±1

µA

IOSR

Receiver Short-Circuit Current

0V ≤ RO ≤ VCC

l

±85

mA

RTERM

Receiver Input Terminating Resistor

TE = VCC, VAB = 2V, VB = –7V, 0V, 10V

(Figure 8)

l

108

120

156

Ω

Logic

VIH

Logic Input High Voltage

VCC = 3.6V

l

2

V

VIL

Logic Input Low Voltage

VCC = 3V

l

0.8

V

IINL

Logic Input Current

l

0

±10

µA

Supplies

ICCS

Supply Current in Shutdown Mode

DE = 0V, RE = VCC, TE = 0V

(C-, I-Grade)

(H-Grade)

l

l

0

0

5

15

µA

µA

ICCR

Supply Current in Receive Mode

DE = 0V, RE = 0V, TE = 0V

l

370

900

µA