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參數(shù)資料
| 型號： | MAX212 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | RS-232 |
| 英文描述： | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| 中文描述： | 5V的高速RS - 232收發(fā)器與0.1uF電容 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大?。?/td> | 132K |
| 代理商： | MAX212 |
M
Programmable DT E/DCE,
+5V RS -232 Transc eiver
_______________________________________________________________________________________
3
PARAMETER
Transmitter + to - Propagation-Delay
Difference (Normal Operation)
MIN
TYP
MAX
100
UNITS
Input Leakage Current
ns
±1
Receiver Propagation Delay,
RS-232 to TTL (Normal Operation)
μ
A
Logic Input Threshold High
1.3
2.0
V
Logic Input Threshold Low
0.8
1.3
μ
s
V
Receiver Propagation Delay,
RS-232 to TTL (Shutdown Mode)
Data Rate
20
kbps
1.5
10
μ
s
Receiver Propagation-Delay Difference
(Normal Operation)
Transition-Region Slew Rate
6
12
30
100
V/
μ
s
Transmitter Propagation Delay,
TTL to RS-232 (Normal Operation)
ns
1.4
3.5
μ
s
Transmitter Enable Time
V
CC
Supply Current
250
μ
s
Transmitter Disable Time
600
ns
Transmitter DTE/DCE Switch Time
600
ns
Receiver DTE/DCE Switch Time
9
20
mA
300
ns
Receiver Termination-Resistor
Connect/Disconnect Time
Shutdown Supply Current
300
ns
4
20
μ
A
Receiver Termination-Resistor Connect
Entering SHDN Time
250
μ
s
Receiver Termination-Resistor
Disconnect Exiting SHDN Time
300
ns
CONDITIONS
t
PHLT
- t
PLHT
Receivers in shutdown mode
t
PLHR
t
PHLT
- t
PLHT
T
A
= +25°C, V
CC
= 5V, R
L
= 3k
to 7k
,
C
L
= to 2500pF,
measured from 3V to -3V or -3V to 3V
t
PLHT
t
TEN
(includes charge-pump start-up time)
t
TTR
t
TSW
t
RSW
No load, T
A
= +25°C
(SHDN = 0V)
DTE/DCE = 0V, SHDN =
HI-Z = V
CC
, Figure 1
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 4.5V to 5.5V, C1 to C4 = 1
μ
F, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
T
A
= T
MIN
to T
MAX
T
A
= +25°C
Normal operation, transmitters and receivers
t
PHLT
200
116
1.3
3.5
t
PHLR
, t
PLHR
0.4
1.5
t
PHLR
0.4
10
Note 1:
The 300
minimum is the EIA/TIA-232E specification, but the actual resistance when in shutdown mode or when V
CC
= 0V
is typically 300k
.
50
MODE-CHANGE TIMING (DTE/DCE)
AC CHARACTERISTICS
POWER SUPPLY
CONTROL LOGIC
(
DTE/DCE, SHDN, HI-Z)
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