4

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7000 • www.exar.com

SP3485_200_051916

PIN FUNCTION

Pin 1 - RO - Receiver output

Pin 2 - RE - Receiver Output Enable Active LOW

Pin 3 - DE - Driver Output Enable Active HIGH

Pin 4 - DI - Driver Input

Pin 5 - GND - Ground Connection

Pin 6 - A - Non-Inverting Driver Output/Receiver Input

Pin 7 - B - Inverting Driver Output/Receiver Input

Pin 8 - Vcc - Positive Supply

Pin Function SP3485

ELECTRICAL CHARACTERISTICS

T

Notes:

1. The transceivers are put into shutdown by bringing RE High and DE Low simultaneously for at least 600ns. If the control inputs are in this state

for less than 50ns, the device is guaranteed to not enter shutdown. If the enable inputs are held in this state for at least 600ns the device is

assured to be in shutdown. Note that the receiver and driver enable times increase significantly when coming out of shutdown.

2. This spec is guaranteed by design and bench characterization.

PARAMETERS

MIN.

TYP.

MAX.

UNITS CONDITIONS

Receiver Enable from

Shutdown to Output High, t

PRSH

1800

ns

C

Figures 7 and 13

Receiver Enable from

Shutdown to Output Low, t

PRSL

1800

ns

Time to Shutdown, t

SHDN

50

200

600

ns

Notes 1 and 2

POWER REQUIREMENTS

Supply Current , No Load

425

2000

µA

RE, DI = 0V or V

Supply Current , No Load

300

1500

µA

RE = 0V, DI = 0V or V