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DRIVER ELECTRICAL CHARACTERISTICS

DRIVER SWITCHING CHARACTERISTICS

ISO15

ISO35

www.ti.com................................................................................................................................................................ SLOS580B – MAY 2008 – REVISED JULY 2008

over recommended operating conditions (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

IO = 0 mA, no load

2.5

VCC

RL = 54 Ω, See Figure 1

1.5

| VOD |

Differential output voltage magnitude

RL = 100 Ω (RS-422), See Figure 1

2.3

Vtest from –7 V to +12 V, See Figure 2

1.5

Change in magnitude of the differential

Δ|VOD|

See Figure 1 and Figure 2

–0.2

0.2

output voltage

VOC(SS)

Steady-state common-mode output voltage

2.6

See Figure 3

Change in steady-state common-mode

ΔVOC(SS)

–0.1

0.1

output voltage

VOC(pp)

Peak-to-peak common-mode output voltage See Figure 3

0.5

Input current

D, DE, VI at 0 V or VCC1

–10

µA

ISO15

See receiver input current

VY or VZ = 12 V

Other

IOZ

High-impedance state output current

VY or VZ = 12 V, VCC = 0

–10

input

IDO35

µA

VY or VZ = –7 V

at 0 V

VY or VZ = –7 V, VCC = 0

–10

VA or VB at –7 V

Other

input

Short-circuit output current

–250

250

VA or VB at 12 V

IOS

at 0 V

C(OD)

Differential output capacitance

VI = 0.4 sin (4E6πt) + 0.5 V, DE at 0 V

CMTI

Common-mode transient immunity

VI = VCC or 0 V, See Figure 12 and Figure 13

kV/

µs

over recommended operating conditions (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPLH, tPHL

Propagation delay

340

tsk(p)

Pulse skew (|tPHL – tPLH|)

See Figure 4

Differential output signal rise time

120

185

300

Differential output signal fall time

120

180

300

See Figure 5

tPHZ

Propagation delay, high-level-to-high-impedance output

205

µs

tPZH

Propagation delay, high-impedance-to-high-level output

530

tPLZ

Propagation delay, low-level to high-impedance output

See Figure 6

330

µs

tPZL

Propagation delay, standby-to-low-level output

530

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