MAX14500 Datasheet, PDF (4/41 Pages) Maxim Integrated Products – Hi-Speed USB-to-SD Card Readers with Bypass

Hi-Speed USB-to-SD Card
Readers with Bypass
ELECTRICAL CHARACTERISTICS (continued)
(V_CC = +2.4V to +3.6V, V_SD = +2.4V to +3.6V, V_IO = +1.5V to +3.6V, V_TM = +2.91V to +3.4V, T_A = -40°C to +85°C, unless otherwise
noted. Typical values are at V_CC = +3.3V, V_IO = +2.5V, V_SD = +2.5V, V_TM = +3.3V, T_A = +25°C.) (Note 2)
PARAMETER
Input High Voltage
Input Low Voltage
USB INTERFACE
On-Resistance
On-Resistance Flatness
On-Capacitance
SYMBOL
CONDITIONS
V_SD < 2.4V
V_IH
V_SD ≥ 2.4V
V_SD < 2.4V
V_IL
V_SD ≥ 2.4V
MIN
0.8 x
V_SD
0.625 x
V_SD
TYP
MAX UNITS
V
0.2 x
V_SD
V
0.25 x
V_SD
R_ON
R_ONFLAT
C_{ON_USB}
V_{CD_} = 0 or V_TM, switch closed
V_{CD_} = 0 to 3.3V, V_TM = +3.3V
Switch closed, measured from CD+ and
CD-
5
Ω
2
Ω
12
pF
Off-Capacitance
C_{OFF_USB}
Switch open, measured from CD+, CD-,
HD+, HD-
AC CHARACTERISTICS (Note 6)
SD CARD CLOCK TIMING (CCLK_), DEFAULT SPEED (Figure 5a)
Clock Low Time
t_WL
C_L = 10pF
Clock High Time
t_WH
C_L = 10pF
Clock Rise Time
t_TLH
C_L = 10pF
Clock Fall Time
t_THL
C_L = 10pF
SD CARD CLOCK TIMING (CCLK_), HI-SPEED (Figure 5b)
Clock Low Time
t_WL
C_L = 40pF
Clock High Time
t_WH
C_L = 40pF
Clock Rise Time
t_TLH
C_L = 40pF
Clock Fall Time
t_THL
C_L = 40pF
SD CARD COMMAND TIMING (CCMD1, CCMD2) (Figure 5b)
Input Setup Time
t_ISU
Input Hold Time
t_IH
Output Delay Time During Data
Transfer Mode
t_ODLY
6
pF
19
ns
19
ns
10
ns
10
ns
7
ns
7
ns
3
ns
3
ns
5
ns
2
ns
14
ns
Output Hold Time
I²C CHARACTERISTICS
SCL Clock Frequency
SDA, SCL Capacitance
SDA Output Fall Time
Hold Time After Repeated START
t_OH
f_SCL
C_{IO_I2C}
t_{OF_I2C}
t_HD,STA
2.5
ns
400
kHz
5
pF
250
ns
0.6
µs
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