6.7 Digital Electrical Characteristics

Typical values at TA = +25°C, full temperature range is TA,MIN = -40°C to TJ,MAX = +110°C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

CML SerDes Inputs [8:1]SRX+/-

VSRDIFF

SerDes Receiver Input Amplitude

differential

100

1200

mVpp

VSRCOM

SerDes Input Common Mode

0.4

0.5

0.6

V

ZSRdiff

SerDes Internal Differential

Termination(1)

100

Ω

FSerDes

SerDes Bit Rate

Full rate mode

19

29.5

Gbps

Half rate mode

9.5

16.25

Gbps

Quarter rate mode

4.75

8.125

Gbps

Insertion Loss Tolerance(2)

Serdes supply = 1.8V

25

dB

TJ

Total Jitter Tolerance

0.42

UI

CMOS I/O: GPIO{B/C/D/E}x, SPICLK, SPISDIO, SPISDO, SPISEN, RESETZ, BISTB0, BISTB1

VIH

High-Level Input Voltage

0.6×VDD1

P8GPIO

V

VIL

Low-Level Input Voltage

0.4×VDD1

P8GPIO

V

IIH

High-Level Input Current

–250

250

µA

IIL

Low-Level Input Current

–250

250

µA

CL

CMOS input capacitance

2

pF

VOH

High-Level Ouput Voltage

VDD1P8G

PIO–0.2

V

VOL

Low-Level Output Voltage

0.2

V

Differential Inputs: SYSREF+/- Mode A

ClockMODE

PLL

Clock

Mode

Only

FSYSREFMAX

SYSREF Input Frequency Maximum

40

MHz

VSWINGSRMAX

SYSREF Input Swing Maximum

1.8

Vppdiff(3)

VSWINGSRMIN

SYSREF Input Swing Minimum

fREF < 500MHz

0.3

Vppdiff(3)

VSWINGSRMIN

SYSREF Input Swing Minimum

fREF > 500MHz

0.6

Vppdiff(3)

VCOMSRMAX

SYSREF Input Common Mode Voltage

Maximum

0.8

V

VCOMSRMIN

SYSREF Input Common Mode Voltage

Minimum

0.6

V

ZT

Input termination

differential

100 (1)

Ω

CL

Input capacitance

Each pin to GND

0.5

pF

LVDS Inputs: 0SYNCIN+/- and 1SYNCIN+/-

VICOM

Input Common Voltage

1.2

V

VID

Differential Input Voltage swing

450

Vppdiff(3)

ZT

Input termination

differential

100

Ω

LVDS Outputs: 0SYNCOUT+/- and 1SYNCOUT+/-

VOCOM

Output Common Voltage

1.2

V

VOD

Differential Output Voltage swing

500

Vppdiff(3)

ZT

Internal Termination

100

Ω

(1)

SYSREF termination is programmable between 100Ω, 150Ω and 300Ω

(2)

Loss tolerance is bump to bump from STX to SRX

www.ti.com

AFE7954

SBASAO7 – JULY 2023

Copyright © 2023 Texas Instruments Incorporated

Submit Document Feedback

15

Product Folder Links: AFE7954