MAX3224CAP datasheet(3/20 Pages) MAXIM

3 / 20 page

1µA Supply Current, 1Mbps, 3.0V to 5.5V,

RS-232 Transceivers with AutoShutdown Plus

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VCC = +3V to +5.5V, C1–C4 = 0.1µF, tested at 3.3V ±10%; CL = 0.047µF, C2–C4 = 0.33µF, tested at 5.0V ±10%; TA = TMIN to TMAX,

unless otherwise noted. Typical values are at TA = +25°C.)

CONDITIONS

Ω

300

10M

Output Resistance

±5

±5.4

Output Voltage Swing

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

Figure 4a

T1IN = T2IN = GND, T3IN = VCC,

T3OUT loaded with 3k

Ω to GND,

T1OUT and T2OUT loaded with

2.5mA each

sec

tAUTOSHDN

Receiver or Transmitter Edge to

Transmitters Shutdown

µs

100

tWU

Receiver or Transmitter Edge to

Transmitters Enabled

µs

tINVL

Receiver Positive or Negative

Threshold to INVALID Low

µs

tINVH

Receiver Positive or Negative

Threshold to INVALID High

VCC - 0.6

INVALID, READY

(MAX3224–MAX3227)

Output Voltage High

0.4

INVALID, READY

(MAX3224–MAX3227)

Output Voltage Low

-0.3

0.3

Receiver Input Threshold to

INVALID Output Low

-2.7

2.7

Receiver Input Threshold to

INVALID Output High

±5

Transmitter Output Voltage

µA

±25

Output Leakage Current

±60

Output Short-Circuit Current

VCC = V+ = V- = 0, transmitter outputs = ±2V

All transmitter outputs loaded with 3k

Ω to

ground

VCC = 5V, Figure 5b (Note 2)

VCC = 5V, Figure 4b

IOUT = -1.0mA

IOUT = -1.6mA

Figure 4a

Negative threshold

Positive threshold

VCC = 0 or 3V to 5.5V, VOUT = ±12V,

Transmitters disabled

TRANSMITTER OUTPUTS

MOUSE DRIVEABILITY (MAX3244/MAX3245)

AUTOSHUTDOWN PLUS (FORCEON = GND, FORCEOFF = VCC)

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