MAX3349EA Просмотр технического описания (PDF) - Maxim Integrated

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MAX3349EA

USB 2.0 Full-Speed Transceiver with UART Multiplexing Mode

Maxim Integrated 

USB 2.0 Full-Speed Transceiver with UART

Multiplexing Mode

ELECTRICAL CHARACTERISTICS (continued)

(VBUS = +4.0V to +5.5V, VUART = +2.7V to +3.3V, VL = +1.40V to +2.75V, TA = -40°C to +85°C, unless otherwise noted. Typical val-

ues are at VBUS = +5V, VL = +1.8V, VUART = +2.75V (UART Mode), and TA = +25°C.) (Note 1)

PARAMETER

ESD PROTECTION (D+, D-)

Human Body Model

IEC 61000-4-2

Air-Gap Discharge

IEC 61000-4-2

Contact Discharge

SYMBOL

CONDITIONS

(Figures 9 and 10)

MIN TYP MAX UNITS

±15

kV

±8

kV

±8

kV

TIMING CHARACTERISTICS

(VBUS = +4.0V to +5.5V, VUART = +2.7V to +3.3V, VL = +1.4V to +2.75V, TA = -40°C to +85°C, unless otherwise noted. Typical values

are at VBUS = +5V, VL = +1.8V, VUART = +2.75V (UART Mode), and TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

USB DRIVER CHARACTERISTICS (CL = 50pF)

Rise Time

tFR

10% to 90% of | VUSB_OHD - VUSB_OLD |

(Figures 1 and 7)

4

20

ns

Fall Time

tFF

90% to 10% of | VUSB_OHD - VUSB_OLD |

4

(Figures 1 and 7)

20

ns

Rise/Fall Time Matching

tFR/tFF

Excluding the first transition from idle

state (Note 2) (Figures 1 and 7)

90

110

%

Output Signal Crossover Voltage

VCRS_F

Excluding the first transition from idle

state (Note 2) (Figure 2)

1.3

2.0

V

Driver Propagation Delay

tPLH_DRV

tPHL_DRV

VL > +1.65V (Figures 2 and 7)

+1.4V < VL < +1.65V (Figures 2 and 7)

VL > +1.65V (Figures 2 and 7)

+1.4V < VL < +1.65V (Figures 2 and 7)

Driver Disable Delay

tPHZ_DRV

tPLZ_DRV

High-to-off transition (Figures 3 and 6)

Low-to-off transition (Figures 3 and 6)

Driver Enable Delay

tPZH_DRV

tPZL_DRV

Off-to-high transition (Figures 3 and 7)

Off-to-low transition (Figures 3 and 7)

USB RECEIVER CHARACTERISTICS (CL = 15pF)

Differential Receiver Propagation

tPLH_RCV

VL > +1.65V (Figures 4 and 8)

+1.4V < VL < +1.65V (Figures 4 and 8)

Delay

tPHL_RCV

VL > +1.65V (Figures 4 and 8)

1.4V < VL < +1.65V (Figures 4 and 8)

Single-Ended Receiver

tPLH_SE

VL > +1.65V (Figures 4 and 8)

+1.4V < VL < +1.65V (Figures 4 and 8)

Propagation Delay

tPHL_SE

VL > +1.65V (Figures 4 and 8)

+1.4V < VL < +1.65V (Figures 4 and 8)

22.5

25

ns

22.5

25

25

ns

25

25

ns

25

25

30

ns

25

30

28

35

ns

28

35

4 _______________________________________________________________________________________

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