R31DS0210EU0106 Rev.1.06

Page 24

May 11, 2026

RC193xx Datasheet

VOH

Output High Voltage [2]

VHIGH = 900mV, Fast Slew Rate,

156.25MHz, 312.5MHz - amplitude is reduced

by ~50% due to double termination. (Slow slew

rate is not recommended for frequencies

>100MHz)

438

474

510

mV

VOL

Output Low Voltage [2]

-7

14

36

VCROSS Crossing Voltage (abs) [3]

218

247

276

ΔVCROSS Crossing Voltage (var) [3][4][5]

-13

7

31

tR

Rise Time [2]

VT = 20% to 80% of swing

203

301

408

ps

tF

Fall Time [2]

VT = 20% to 80% of swing

207

278

369

ps

tDC

Output Duty Cycle [6]

Across all settings in this table, VT = 0V.

48.6

49.6

50.6

%

1. Both Tx and Rx are terminated (double-terminated) with CL= 2pF. This reduces amplitude by 50%. See Test Loads.

2. Measured from single-ended waveform.

3. Measured at crossing point where the instantaneous voltage value of the rising edge of CLK equals the falling edge of CLKb.

4. Refers to the total variation from the lowest crossing point to the highest, regardless of which edge is crossing. Refers to all crossing points for

this measurement.

5. Defined as the total variation of all crossing voltages of Rising CLK and Falling CLKb. This is the maximum allowed variance in VCROSS for any

particular system.

6. Measured from differential waveform.

Table 21. 34ohm CLK AC/DC Characteristics – Rx-Terminated, Non-PCIe Applications [1]

1. ZOUTSEL_tri = M. This setting turns off the source termination, provided approximately 75% of the source-terminated amplitude at the receiver

with CL= 2pF. For more information, see Figure 10. This setting intends to provide >500mV single-ended swing into a receiver terminated

load.

Symbol

Parameter

Condition

Minimum Typical Maximum

Unit

VOH

Output High Voltage [2]

2. Measured from single-ended waveform.

VHIGH = 800mV, Fast Slew Rate,

156.25MHz, 312.5MHz - amplitude is

reduced by ~50% due to double termination.

(Slow slew rate is not recommended for

frequencies > 100MHz)

554

601

650

mV

VOL

Output Low Voltage [2]

-3

19

40

VCROSS Crossing Voltage (abs) [3]

3. Measured at crossing point where the instantaneous voltage value of the rising edge of CLK equals the falling edge of CLKb.

281

316

352

ΔVCROSS Crossing Voltage (var) [3][4][5]

4. Refers to the total variation from the lowest crossing point to the highest, regardless of which edge is crossing. Refers to all crossing points for

this measurement.

5. Defined as the total variation of all crossing voltages of Rising CLK and Falling CLKb. This is the maximum allowed variance in VCROSS for any

particular system.

-21

11

42

tR

Rise Time [2]

VT = 20% to 80% of swing

130

266

404

ps

tF

Fall Time [2]

VT = 20% to 80% of swing

133

316

500

ps

VOH

Output High Voltage [2]

VHIGH = 900mV, Fast Slew Rate,

156.25MHz, 312.5MHz - amplitude is

reduced by ~50% due to double termination.

(Slow slew rate is not recommended for

frequencies >100MHz)

564

629

695

mV

VOL

Output Low Voltage [2]

-3

19

40

VCROSS Crossing Voltage (abs) [3]

290

331

372

ΔVCROSS Crossing Voltage (var) [3][4][5]

-22

11

45

tR

Rise Time [2]

VT = 20% to 80% of swing

122

262

404

ps

tF

Fall Time [2]

VT = 20% to 80% of swing

124

310

501

ps

tDC

Output Duty Cycle [6]

6. Measured from differential waveform.

Across all settings in this table, VT = 0V.

48.6

49.5

50.4

%

Table 20. 100 ohm CLK AC/DC Characteristics – Double-Terminated, Non-PCIe Applications [1]

Symbol

Parameter

Conditions

Minimum

Typical

Maximum Unit