MAX14502AETL+T Maxim Integrated Products, MAX14502AETL+T Datasheet - Page 11

• Manufacturer Part Number: MAX14502AETL+T
• Description: IC CARD READER USB-SD 40-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX14502AETL+T

• Applications: USB
• Interface: I²C
• Voltage - Supply: 1.8 V ~ 3.3 V
• Package / Case: 40-TQFN Exposed Pad
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

POWER SUPPLY
NO CONNECTION
EXPOSED PAD
18, 24, 26,
TQFN
35, 36
—
—
—
—
23
38
39
40
37
—
5
PIN
C1, C2, E7,
E8, G5, G6
B1, B2
B3, C3
D4, E4
WLP
G4
G3
C5
A4
A6
F6
A1
—
______________________________________________________________________________________
HDAT2_2
HDAT2_3
HCMD2
HCLK2
NAME
CLDO
GND
N.C.
V
V
V
V
EP
TM
CC
SD
IO
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.
S D C ar d 2 C l ock Anal og S w i tch. H C LK2 connects to C LK on the S D p or t of the host µP .
I/O Logic-Level Translator Voltage. Bypass V
capacitor. V
USB Analog Switch and Transceiver Power Supply. Bypass V
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 V
or better).
SD Card Voltage. Bypass V
better).
Ground
No Connection. Connect N.C. to GND.
Exposed Pad. Connect EP to GND. Do not use EP as the sole GND connection.
IO
powers the logic inputs/outputs and I
Hi-Speed USB-to-SD Card
Readers with Bypass
SD
to GND with a 1µF ceramic capacitor (X7R, X5R, or
CC
Pin Description (continued)
to GND with a 1µF ceramic capacitor (X7R, X5R,
FUNCTION
IO
to GND with a 0.1µF ceramic
2
C block.
TM
to GND with a 0.1µF
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