MAX214CWI 查看數據表（PDF） - Maxim Integrated
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MAX214CWI Datasheet PDF : 12 Pages
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Programmable DTE/DCE,
+5V RS-232 Transceiver
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 4.5V to 5.5V, C1 to C4 = 1µF, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
CONDITIONS
POWER SUPPLY
VCC Supply Current
No load, TA = +25°C
Shutdown Supply Current
DTE/DCE = 0V, SHDN =
HI-Z = VCC, Figure 1
CONTROL LOGIC (DTE/DCE, SHDN, HI-Z)
TA = +25°C
TA = TMIN to TMAX
Logic Input Threshold Low
Logic Input Threshold High
Input Leakage Current
AC CHARACTERISTICS
Data Rate
Normal operation, transmitters and receivers
Receivers in shutdown mode
Transition-Region Slew Rate
TA = +25°C, VCC = 5V, RL = 3kΩ to 7kΩ,
CL = to 2500pF,
measured from 3V to -3V or -3V to 3V
Transmitter Propagation Delay,
TTL to RS-232 (Normal Operation)
tPHLT
tPLHT
Transmitter + to - Propagation-Delay
Difference (Normal Operation)
tPHLT - tPLHT
MIN TYP MAX UNITS
9
20
mA
4
20
µA
50
0.8
1.3
V
1.3 2.0
V
±1
µA
200 116
20
kbps
6
12
30
V/µs
1.3 3.5
µs
1.4 3.5
100
ns
Receiver Propagation Delay,
RS-232 to TTL (Normal Operation)
tPHLR, tPLHR
Receiver Propagation Delay,
RS-232 to TTL (Shutdown Mode)
tPHLR
tPLHR
Receiver Propagation-Delay Difference
(Normal Operation)
tPHLT - tPLHT
MODE-CHANGE TIMING (DTE/DCE)
Transmitter Enable Time
Transmitter Disable Time
Transmitter DTE/DCE Switch Time
Receiver DTE/DCE Switch Time
tTEN (includes charge-pump start-up time)
tTTR
tTSW
tRSW
Receiver Termination-Resistor
Connect/Disconnect Time
(SHDN = 0V)
0.4 1.5
µs
0.4
10
µs
1.5
10
100
ns
250
µs
600
ns
600
ns
300
ns
300
ns
Receiver Termination-Resistor Connect
Entering SHDN Time
250
µs
Receiver Termination-Resistor
Disconnect Exiting SHDN Time
300
ns
Note 1: The 300Ω minimum is the EIA/TIA-232E specification, but the actual resistance when in shutdown mode or when VCC = 0V
is typically 300kΩ.
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