R31DS0145EU0116 Rev. 1.16

Page 9

Sep 24, 2025

XK Datasheet

Phase Jitter



jit

322.265625

CML

51

61

fs RMS

HCSL

50

62

LVCMOS

53

64

LVDS

53

64

Phase Jitter



jit

500

CML

65

75

fs RMS

HCSL

64

74

LVDS

65

75

Phase Jitter



jit

625

CML

62

79

fs RMS

HCSL

63

73

LVDS

65

79

Phase Jitter



jit

644.53125

CML

49

58

fs RMS

HCSL

48

59

LVDS

49

59

Phase Jitter



jit

1250

CML

51

59

fs RMS

LVDS

52

60

Table 8. AC Characteristics at 1.8V

Parameter

Symbol

Conditions

Minimum

Typical

Maximum

Unit

Output Rise Time [1]

1. All measurements taken with 20% to 80% thresholds at 156.25MHz

tR

CML

168

195

229

ps

HCSL

148

185

232

LVCMOS

152

177

207

LVDS

113

156

177

Output Fall Time [1]

tF

CML

155

182

229

ps

HCSL

176

220

280

LVCMOS

147

174

207

LVDS

176

230

315

Output Duty Cycle [2]

2. All measurements taken at the crossing points for differential signals and at VDD/2 for LVCMOS outputs if applicable. Applies to all

output configurations.

ODC

FOUT 1000MHz

49

50.5

53

%

FOUT 1000MHz

50

53.2

56

Table 9. 1.8V DC Characteristics

Parameter

Symbol

Conditions

Minimum

Typical

Maximum

Unit

Output High Voltage [1]

VOH

CML

1.79

1.8

1.81

V

HCSL

725

774

825

mV

LVCMOS, IOH = -2mA

1.6

1.66

1.7

V

Table 7. (Cont.)Phase Jitter at 1.8V (Cont.)

Parameter

Symbol

Test Frequency

(MHz)

Output Type

Typical

Maximum

Unit