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參數資料
| 型號： | ADM236L |
| 廠商： | Analog Devices, 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收發器與0.1uF電容 |
| 文件頁數： | 10/16頁 |
| 文件大小： | 364K |
| 代理商： | ADM236L |
ADM223/ADM230L–ADM241L
–10–
REV. 0
PIN FUNCT ION DE SCRIPT ION
Mnemonic
Function
V
CC
V+
Power Supply Input 5 V
±
10% (+5 V
±
5% ADM233L, ADM235L).
Internally generated positive supply (+10 V nominal) on all parts except ADM231L and ADM239L.
ADM231L, ADM239L requires external 7.5 V to 13.2 V supply.
Internally generated negative supply (–10 V nominal).
Ground pin. Must be connected to 0 V.
(ADM231L and ADM239L only). External capacitor (+ terminal) is connected to this pin.
(ADM231L and ADM239L only). External capacitor (– terminal) is connected to this pin.
(ADM230L, ADM232L, ADM234L, ADM236L, ADM237L, ADM238L, ADM241L) External capacitor (+ terminal)
is connected to this pin.
(ADM233L) T he capacitor is connected internally and no external connection to this pin is required.
(ADM230L, ADM232L, ADM234L, ADM236L, ADM237L, ADM238L, ADM241L) External capacitor (– terminal)
is connected to this pin.
(ADM233L) T he capacitor is connected internally and no external connection to this pin is required.
(ADM230L, ADM232L, ADM234L, ADM236L, ADM237L, ADM238L, ADM241L) External capacitor (+ terminal)
is connected to this pin.
(ADM233L) Internal capacitor connections, Pins 11 and 15 must be connected together.
(ADM230L, ADM232L, ADM234L, ADM236L, ADM237L, ADM238L, ADM241L) External capacitor (– terminal)
is connected to this pin.
(ADM233L) Internal capacitor connections, Pins 10 and 16 must be connected together.
T ransmitter (Driver) Inputs. T hese inputs accept T T L/CMOS levels. An internal 400 k
pull-up resistor to V
CC
is
connected on each input.
T ransmitter (Driver) Outputs. T hese are RS-232 levels (typically
±
10 V).
Receiver Inputs. T hese inputs accept RS-232 signal levels. An internal 5 k
pull-down resistor to GND is connected on
each input.
Receiver Outputs. T hese are T T L/CMOS levels.
Enable Input. Active low on ADM235L, ADM236L, ADM239L, ADM241L. Active high ADM223. T his input is used
to enable/disable the receiver outputs. With
EN
= low (EN = high ADM223), the receiver outputs are enabled. With
EN
= high (EN = low ADM223), the outputs are placed in a high impedance state. T his facility is useful for
connecting to microprocessor systems.
Shutdown Input. Active high on ADM235L, ADM236L, ADM241L. Active low on ADM223. With SD = high on the
ADM235L, ADM236L, ADM241L, the charge pump is disabled, the receiver outputs are placed in a high impedance
state and the driver outputs are turned off. With
SD
low on the ADM223, the charge pump is disabled, the driver
outputs are turned off and all receivers except R4 and R5 are placed in a high impedance state. In shutdown, the power
consumption reduces to 5
μ
W.
No Connect. No connections are required to this pin.
V–
GND
C+
C–
C1+
C1–
C2+
C2–
T
IN
T
OUT
R
IN
R
OUT
EN
/EN
SD/
SD
NC
T able I. ADM235L, ADM236L, ADM241L T ruth T able
T ransmitters
T 1–T 5
Receivers
R1–R5
SD
EN
Status
0
0
1
0
1
0
Normal Operation
Normal Operation
Shutdown
Enabled
Enabled
Disabled
Enabled
Disabled
Disabled
T able II. ADM223 T ruth T able
T ransmitters Receivers
T 1–T 4
SD
E N Status
R1–R3
R4, R5
0
0
1
1
0
1
0
1
Shutdown
Shutdown
Normal Operation Enabled
Normal Operation Enabled
Disabled
Disabled
Disabled Disabled
Disabled Enabled
Disabled Disabled
Enabled Enabled
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