MAX14500 データシートの表示（PDF） - Maxim Integrated

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MAX14500

Hi-Speed USB-to-SD Card Readers with Bypass

Maxim Integrated 

Hi-Speed USB-to-SD Card

Readers with Bypass

PIN

TQFN

WLP

—

C5

—

A4

—

G4

—

G3

POWER SUPPLY

5

A6

23

F6

38

B1, B2

39

B3, C3

40

A1

18, 24, 26, C1, C2, E7,

37

E8, G5, G6

NO CONNECTION

35, 36

D4, E4

EXPOSED PAD

—

—

Pin Description (continued)

NAME

HDAT2_2

HDAT2_3

HCMD2

HCLK2

FUNCTION

SD Card 2 Data Bus Analog Switch. HDAT2_2 connects to DAT2 on the SD port of

the host µP.

SD Card 2 Data Bus Analog Switch. HDAT2_3 connects to DAT3 on the SD port of

the host µP.

SD Card 2 Command Analog Switch. HCMD2 connects to CMD on the SD port of the

host µP.

SD Card 2 Clock Analog Switch. HCLK2 connects to CLK on the SD port of the host µP.

VIO

VTM

CLDO

VCC

VSD

GND

I/O Logic-Level Translator Voltage. Bypass VIO to GND with a 0.1µF ceramic

capacitor. VIO powers the logic inputs/outputs and I2C block.

USB Analog Switch and Transceiver Power Supply. Bypass VTM to GND with a 0.1µF

ceramic capacitor.

Bypass Capacitor for Internal +1.8V LDO. Connect a 1µF ceramic capacitor (X7R,

X5R, or better) from CLDO to GND. CLDO must not be used to power external

circuitry.

Digital Supply Voltage. Bypass VCC to GND with a 1µF ceramic capacitor (X7R, X5R,

or better).

SD Card Voltage. Bypass VSD to GND with a 1µF ceramic capacitor (X7R, X5R, or

better).

Ground

N.C.

EP

No Connection. Connect N.C. to GND.

Exposed Pad. Connect EP to GND. Do not use EP as the sole GND connection.

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