SN65MLVD200, SN65MLVD202

SN65MLVD204, SN65MLVD205

MULTIPOINT–LVDS LINE DRIVERS AND RECEIVERS

SLLS463E – SEPTEMBER 2001 – REVISED JUNE 2003

21

POST OFFICE BOX 655303

APPLICATION INFORMATION

Type-1 and Type-2 receivers

The M-LVDS standard defines Type-1 and Type-2 receivers. Type-1 receivers include no provisions for failsafe

and have their differential input voltage thresholds near zero volts. Type-2 receivers have their differential input

voltage thresholds offset from zero volts to detect the absence of a voltage difference. Type-1 receivers

maximize the differential noise margin and are intended for maximum signaling rates. Type-2 receivers are

intended for control signals and slower signaling rates. The impact on receiver output by the offset input can

be seen in Table 3 and Figure 33.

Table 3. M-LVDS Receiver Input Voltage Threshold Requirements

Receiver Type

Output Low

Output High

1

–2.4 V

≤ VID ≤ –0.05 V

0.05 V

≤ VID ≤ 2.4 V

2

–2.4 V

≤ VID ≤ 0.05 V

0.15 V

≤ VID ≤ 2.4 V

–100

–50

0

50

100

150

200

Type 1

Transition Regions

Type 2

Low

High

Low

High

Figure 33. Receiver Differential Input Voltage Showing Transition Region