參數(shù)資料
型號(hào)： ADM1385ARSZ-REEL7
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 12/16頁(yè)
文件大?。?/td> 0K
描述： IC TXRX RS-232 3.3V HS 20SSOP
標(biāo)準(zhǔn)包裝： 1
系列： *
其它名稱(chēng)： ADM1385ARSZ-REEL7DKR
ADM3202/ADM3222/ADM1385
Rev. E | Page 5 of 16
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
PIN CONFIGURATIONS (N, R, RU, AND RW PACKAGES)
C1+
1
V+
2
C1–
3
C2+
4
VCC
16
GND
15
T1OUT
14
R1IN
13
C2–
5
R1OUT
12
V–
6
T1IN
11
T2OUT 7
T2IN
10
R2IN 8
R2OUT
9
ADM3202
TOP VIEW
(Not to Scale)
00071-004
Figure 4. N, R, RU, and RW Packages Pin Configuration
EN 1
C1+
2
V+
3
C1– 4
SD
18
VCC
17
GND
16
T1OUT
15
C2+
5
C2– 6
V– 7
R1IN
14
R1OUT
13
T1IN
12
T2OUT 8
T2IN
11
R2IN 9
R2OUT
10
ADM3222
TOP VIEW
(Not to Scale)
00071-005
Figure 5. N and RW Packages Pin Configuration
PIN CONFIGURATIONS (RS AND RU PACKAGES)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
C1+
V+
C1–
V–
C2–
C2+
EN
VCC
GND
T1OUT
NC
R1OUT
R1IN
R2OUT
R2IN
T2OUT
NC
T2IN
T1IN
SD
ADM3222
(SSOP/TSSOP)
TOP VIEW
(Not to Scale)
NC = NO CONNECT
00071-006
Figure 6. RS and RU Packages Pin Configuration
DD 1
C1+ 2
V+ 3
C1– 4
SD
20
VCC
19
GND
18
T1OUT
17
C2+ 5
C2– 6
V– 7
R1IN
16
R1OUT
15
T1IN
14
T2OUT 8
T2IN
13
R2IN 9
R2OUT
12
NC 10
NC
11
NC = NO CONNECT
ADM1385
(SSOP)
TOP VIEW
(Not to Scale)
00071-007
Figure 7. RS Package Pin Configuration
Table 3. Pin Function Descriptions
Mnemonic
Description
VCC
Power Supply Input (3.3 V ± 0.3 V).
V+
Internally Generated Positive Supply (+6 V nominal).
V–
Internally Generated Negative Supply (6 V nominal).
GND
Ground Pin. Must be connected to 0 V.
C1+, C1–
External Capacitor 1 is connected between these pins. A 0.1 μF capacitor is recommended but larger capacitors up to 47 μF
can be used.
C2+, C2–
External Capacitor 2 is connected between these pins. A 0.1 μF capacitor is recommended but larger capacitors up to 47 μF
can be used.
TxIN
Transmitter (Driver) Inputs. These inputs accept TTL/CMOS levels.
TxOUT
Transmitter (Driver) Outputs. These are RS-232 signal levels (typically ±9 V).
RxIN
Receiver Inputs. These inputs accept RS-232 signal levels. An internal 5 kΩ pull-down resistor to GND is connected on each input.
RxOUT
Receiver Outputs. These are CMOS output logic levels.
EN
(ADM3222 only) Receiver Enable. Active low. When low, the receiver outputs are enabled. When high, they are three-stated.
SD
(ADM3222 only) Shutdown Control. Active low. When low, the charge pump is shut down and the transmitter outputs
are disabled.
SD
(ADM1385 only) Shutdown Control. When low, the charge pump is shut down and all transmitters and receivers are disabled.
DD
(ADM1385 only) Driver Disable. When low, the charge pump is turned off and the transmitters are disabled. The receivers
remain active.
NC
No Connect.
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