Measured on a Texas Instruments reference design with Tc = 25°C, unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIH

Lowest GPIO input voltage reliably

interpreted as a High

0.8*VDDS

V

VIL

Highest GPIO input voltage reliably

interpreted as a Low

0.2*VDDS

V

6.11 SPI Characteristics

Over operating free-air temperature range (unless otherwise noted)

PARAMETERS

TEST CONDITIONS

MIN

TYP

MAX

UNIT

fSCLK

1/tsclk

SPI clock frequency

Secondary Mode 2.97V < VDDS < 3.8V

12

MHz

Secondary Mode VDDS < 2.97V

8

DCSCK

SCK duty cycle

45%

50%

55%

6.12 DC/DC

When Measured on the BP-CC1404P-8-FE reference design with Tc = 25°C, VDDS = 3.6V.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Inductor at VDDR pin

2.2

µH

Load capacitor at VDDR pin

10

µF

6.13 48MHz Crystal Oscillator (HFXT)

Measured on a Texas Instruments reference design with Tc = 25°C, VDDS = 3.6V, unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Crystal frequency

Recommended BOM and

layout

48

MHz

ESR

Equivalent series resistance 6 pF < CL ≤ 9 pF

20

60

Ω

ESR

Equivalent series resistance 5 pF < CL ≤ 6 pF

80

Ω

CL

Crystal load capacitance(3)

5

7(2)

9

pF

Start-up

time(1)

Until clock is qualified, 48MHz crystals only

200

µs

(1)

Start-up time using the TI-provided power driver. Start-up time may increase if driver is not used.

(2)

On-chip default connected capacitance including reference design parasitic capacitance.

(3)

Adjustable load capacitance is integrated into the device. External load capacitors are required for systems targeting compliance with

certain regulations.

6.14 48MHz Clock Output Buffer

Measured on a Texas Instruments reference design with Tc = 25°C, VDDS = 3.6V, unless otherwise noted.(1)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Clock frequency

48

MHz

Startup time

Recommended BOM and layout

500

µs

Load capacitance

PCB + parasitics on receiving input pin

2

5

10

pF

Clipped sine output, average voltage

CL=10pF (trimmed)

0.65

V

Clipped sine output, peak-to-peak

0.6

1.24

V

Current consumption when active

2

mA

(1)

Probing or otherwise stopping the TCXO while the DC/DC converter is enabled may cause permanent damage to the device.

CC1404P

SWRS300 – SEPTEMBER 2026

www.ti.com

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