LT1796CS8 datasheet(3/8 Pages) LINER

3 / 8 page

LT1796

1796f

DC ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VCC = 4.75V to 5.25V, VRS = 0V unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VTH

Differential Input Threshold Voltage

VRS = 0V, – 7V < VCM < 12V

0.5

0.9

for Receiver

VRS = 5V, – 7V < VCM < 12V

0.5

0.9

∆VTH

Receiver Input Hysteresis

– 7V < VCM < 12V

VOH

Receiver Output High Voltage

VCC = 4.75V, IO = – 400µA, VID = 500mV

3.6

VOL

Receiver Output Low Voltage

VCC = 4.75V, IO = 1.6mA, VID = 900mV

0.15

0.4

ISCR

Receiver Short-Circuit Current

0V < VO < VCC , VCC = 5.25V

720

VREF

Reference Output Voltage

– 100

µA < IREF < 100µA

2.25

2.5

2.7

VREFSC

Reference Output Short-Circuit Current

0 < VREF < VCC

–20

VRSSB

RS Pin Standby Threshold

VCC = 5V

2.5

2.8

IRS

RS Input Current

VRS = 5V, VCC = 5V

0.1

µA

VRS = 0V, VCC = 5V

– 270

– 200

– 140

µA

RS = 47k, VCC = 5V

–90

– 60

–40

µA

ICC

Supply Current

Dominant

No Load, VRS = 0V, VTXD = 0V, VCC = 5.25V

4.3

Recessive

RL = 60Ω, VRS = 0V, VTXD = 5V, VCC = 5.25V

3.8

Standby

RL = 60Ω, VRS = 5V, VCC = 5.25V

0.8

1.5

SWITCHI G CHARACTERISTICS The q denotes the specifications which apply over the full operating

temperature range. VRS = 0V unless otherwise noted. (Note 2)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

tBIT

Minimum Bit Time

(Note 3)

µs

FMAX

Maximum Data Rate

(Note 3)

125

kbps

tTXDON

Driver Input to Bus Active

Figures 1, 2

RS = 0k

300

500

RS = 47k

350

1000

tTXDOFF

Driver Input to Bus Inactive

Figures 1, 2

RS = 0k

500

1000

RS = 47k

600

1500

tLBON

Loopback Delay Active

Figures 1, 3

0.6

1.5

µs

tLBOFF

Loopback Delay Inactive

Figures 1, 3

1.5

µs

tRXDOFF

Receiver Delay Off

Figures 1, 4

400

600

tRXDON

Receiver Delay On

Figures 1, 4

300

600

tRXDOFFSB

Receiver Delay Off, Standby

VRS = 4V, Figures 1, 4

1.5

µs

tRXDONSB

Receiver Delay On, Standby

VRS = 4V, Figures 1, 4

µs

tWAKE

Wake-Up Delay from Standby

Figures 1, 5

115

µs

SR+

Positive Slew Rate

RS = 0k

512

µs

RS = 47k

µs

SR–

Negative Slew Rate

RS = 0k

536

µs

RS = 47k

µs

Note 1: Absolute Maximum Ratings are those values beyond which the life

of the device may be impaired.

Note 2: Unless otherwise specified, testing done at VCC = 5V, TA = 25°C.

Note 3: Bit time and data rate specifications are guaranteed by driver and

receiver delay time measurements.

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