SN65HVD20,SN65HVD21

SN65HVD22,SN65HVD23,SN65HVD24

SLLS552D − DECEMBER 2002 − REVISED APRIL 2005

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2

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during

storage or handling to prevent electrostatic damage to the MOS gates.

DESCRIPTION (continued)

The ‘HVD20 provides high signaling rate (up to 25 Mbps) for interconnecting networks of up to 64 nodes.

The ‘HVD21 allows up to 256 connected nodes at moderate data rates (up to 5 Mbps). The driver output slew rate is

controlled to provide reliable switching with shaped transitions which reduce high-frequency noise emissions.

The ‘HVD22 has controlled driver output slew rate for low radiated noise in emission-sensitive applications and for

improved signal quality with long stubs. Up to 256 ‘HVD22 nodes can be connected at signaling rates up to 500 kbps.

The ‘HVD23 implements receiver equalization technology for improved jitter performance on differential bus applications

with data rates up to 25 Mbps at cable lengths up to 160 meters.

The ‘HVD24 implements receiver equalization technology for improved jitter performance on differential bus applications

with data rates in the range of 1 Mbps to 10 Mbps at cable lengths up to 1000 meters.

The receivers also include a failsafe circuit that provides a high-level output within 250 microseconds after loss of the input

signal. The most common causes of signal loss are disconnected cables, shorted lines, or the absence of any active

transmitters on the bus. This feature prevents noise from being received as valid data under these fault conditions. This

feature may also be used for Wired-Or bus signaling.

The SN65HVD2X devices are characterized for operation over the temperature range of −40

°C to 85°C.

PRODUCT SELECTION GUIDE

PART NUMBERS

CABLE LENGTH AND SIGNALING RATE(1)

NODES

MARKING

SN65HVD20

Up to 50 m at 25 Mbps

Up to 64

D: VP20

P: 65HVD20

SN65HVD21

Up to 150 m at 5 Mbps (with slew rate limit)

Up to 256

D: VP21

P: 65HVD21

SN65HVD22

Up to1200 m at 500 kbps (with slew rate limit)

Up to 256

D: VP22

P: 65HVD22

SN65HVD23

Up to 160 m at 25 Mbps (with receiver equalization)

Up to 64

D: VP23

P: 65HVD23

SN65HVD24

Up to 500 m at 3 Mbps (with receiver equalization)

Up to 256

D: VP24

P: 65HVD24

(1) Distance and signaling rate predictions based upon Belden 3105A cable and 15% eye pattern jitter.

AVAILABLE OPTIONS

PLASTIC THROUGH-HOLE

P−PACKAGE

(JEDEC MS-001)

PLASTIC SMALL-OUTLINE(1)

D−PACKAGE

(JEDEC MS-012)

SN65HVD20P

SN65HVD21P

SN65HVD22P

SN65HVD23P

SN65HVD24P

SN65HVD20D

SN65HVD21D

SN65HVD22D

SN65HVD23D

SN65HVD24D

(1) Add R suffix for taped and reeled carriers.