MAX3349EA Просмотр технического описания (PDF) - Maxim Integrated
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MAX3349EA Datasheet PDF : 17 Pages
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USB 2.0 Full-Speed Transceiver with UART
Multiplexing Mode
TIMING CHARACTERISTICS (continued)
(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
Single-Ended Receiver Disable
Delay
tPHZ_SE
tPLZ_SE
High-to-off transition,
VL > +1.65V (Figure 5)
High-to-off transition,
+1.4V < VL < +1.65V (Figure 5)
Low-to-off transition,
VL > +1.65V (Figure 5)
Low-to-off transition,
+1.4V < VL < +1.65V (Figure 5)
10
12
ns
10
12
Single-Ended Receiver Enable
Delay
tPZH_SE
tPZL_SE
Off-to-high transition,
VL > +1.65V (Figure 5)
Off-to-high transition,
+1.4V < VL < +1.65 (Figure 5)
Off-to-low transition,
VL > +1.65V (Figure 5)
Off-to-low transition,
+1.4V < VL < +1.65V (Figure 5)
UART DRIVER CHARACTERISTICS (CL = 200pF)
Rise Time (D-)
tFR_TUART 10% to 90% of |VOHD - VOLD| (Figure 13)
Fall Time (D-)
tFF_TUART 90% to 10% of |VOHD - VOLD| (Figure 13)
Driver Propagation Delay
tPLH_TUART (Figure 13)
tPHL_TUART (Figure 13)
UART RECEIVER CHARACTERISTICS (CL = 15pF)
Receiver (Rx) Propagation Delay
tPLH_RUART (Figure 14)
tPHL_RUART (Figure 14)
Receiver (Rx) Rise/Fall Time
tFR_RUART
tFF_RUART
(Figure 14)
(Figure 14)
20
20
ns
20
20
60
200
ns
60
200
ns
70
200
ns
70
200
60
ns
60
45
ns
45
Note 1: Parameters are 100% production tested at TA =+25°C, unless otherwise noted. Limits over temperature are guaranteed
by design.
Note 2: Guaranteed by design, not production tested.
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