20%

80%

0V differential

20%

80%

LMH0395

SNLS323M – AUGUST 2010 – REVISED JULY 2015

www.ti.com

AC Electrical Characteristics (continued)

over supply voltage and operating temperature ranges, unless otherwise specified

(1).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

15

dB

Input return loss (SDI, SDI)

10

dB

Input resistance (SDI, SDI,)

Single-ended

1.5

k

Ω

Input capacitance (SDI, SDI)

Single-ended

0.7

pF

(5)

Input return loss is dependent on board design. The LMH0395 exceeds this specification on the SD395EVK evaluation board with a

return loss network consisting of a 5.6-nH inductor in parallel with a 75-

Ω series resistor on the input.

6.7 Switching Characteristics for SPI Interface

over supply voltage and operating temperature ranges, unless otherwise specified

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

MISO driven-to-tristate time

20

ns

MISO tristate-to-driven time

MISO, see Figure 3

10

ns

MISO output delay time

15

ns

(1)

6.8 Timing Requirements for SPI Interface

over supply voltage and operating temperature ranges, unless otherwise specified

TEST CONDITIONS

MIN

NOM

MAX

UNIT

Frequency

SCK

20

MHz

% SCK

SCK pulse width high

40

period

SCK, see Figure 2, Figure 3

% SCK

SCK pulse width low

40

period

MOSI set-up time

4

ns

MOSI, see Figure 2, Figure 3

MOSI hold time

4

ns

SS set-up time

14

ns

SS hold time

4

ns

SS, see Figure 2, Figure 3

SCK

SS OFF-time

1

period

(1)

Figure 1. LVDS Output Voltage, Offset, and Timing Parameters

8

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