参数资料
| 型号： | MAX212EAG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/8页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS-232 LP 24-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 3/5 |
| 规程： | RS232 |
| 电源电压： | 3 V ~ 3.6 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 24-SSOP |
| 包装： | 带卷 (TR) |
MAX212
+3V-Powered, Low-Power,
True RS-232 Transceiver
_______________________________________________________________________________________
5
Switch-Mode Power Supply
The switch-mode power supply uses a single inductor
with two inexpensive diodes and two capacitors to
generate ±6.5V from the 3.0V to 3.6V input. Figure 1
shows the complete circuit for the power supply.
Use a 15
H inductor with a saturation current rating of at
least 350mA and under 1
resistance. Sample surface-
mount inductors are available from Maxim. Use 1N6050
diodes or equivalent. Surface-mount equivalents for the
1N6050 include the Motorola MMBD6050LT1, Philips
PMBD6050, and Allegro (formerly Sprague) TMPD6050LT.
For C1 and C2, use ceramic capacitors with values no
less than indicated in Figure 1. These capacitors deter-
mine the ripple on V+ and V-, but not the absolute volt-
ages. Bypass VCC to GND with at least 0.33
F close to
the MAX212. Increase this to 4.7
F if there are no other
VCC supply bypass components less than 6 inches
(15cm) away from the MAX212.
Component suppliers are listed in Table 1.
RS-232 Drivers
All three drivers are identical and deliver EIA/TIA-232E
and EIA/TIA-562 output voltage levels when VCC is
between 3.0V and 3.6V. Disable the drivers by taking
the
–
S
—
D pin to GND. The transmitter outputs are forced
into a high-impedance state when
–
S
—
D is grounded.
RS-232 Receivers
All
five
receivers
are
identical
and
accept
EIA/TIA-232E and EIA/TIA-562 input signals. The CMOS
receiver outputs swing rail-to-rail (0V to VCC). When EN
is high, the receivers are active regardless of
–
S
—
D’s status.
When EN is low, the receivers’ outputs are put into a
high-impedance state. This allows two RS-232 ports (or
two parts of different types) to be wire-ORed at the UART.
MAX212
T1IN
VCC
SD
+3.3V
+3.3V TO ±6.5V
DC-DC CONVERTER
EN
T1OUT
LN
LP
V-
V+
GND
L
15
H
D1
1N6050
1
214
23
T1
C2
0.33
F
C1
0.68
F
C3
0.33
F
D2
1N6050
SHUTDOWN
11
3
4
17
T2IN
T2OUT
T2
12
16
T3IN
T3OUT
T3
13
15
R1OUT
R1IN
622
R2OUT
R2IN
R2
721
R3OUT
R3IN
820
R3
R4OUT
R4IN
919
R4
R5OUT
R5IN
10
18
R5
5
24
ENABLE
R1
Figure 1. Typical Application Circuit
Table 1. Suggested Component Suppliers
MANUFACTURER
PART NUMBER
PHONE NUMBER
FAX NUMBER
Allegro
TMPD6050LT
USA (508) 853-5049
Motorola
MMBD6050LT1
USA (408) 991-7420
Murata
LQH4N150K-TA
Philips
PMBD6050
USA (401) 762-3800
USA (401) 767-4493
Sumida
CD43150
USA (708) 956-0666
Japan (03) 3607-5111
TDK
NLC453232T-150K
USA (708) 803-6296
Japan (03) 3278-5358
USA (508) 853-5000
USA (408) 749-0510
USA (404) 831-9172
Japan (075) 951-9111
USA (404) 436-3030
Japan (075) 955-6526
USA (708) 956-0702
Japan (03) 3607-5428
USA (708) 803-6100
Japan (03) 3278-5111
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX212EVKIT-SO | 功能描述:RS-232接口集成电路 +3V-Powered Low-Power True RS-232 Transceiver RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX212EVKIT-SS0P | 制造商:Maxim Integrated Products 功能描述:- Bulk |
| MAX212EWG | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX212EWG+T | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX212EWG-T | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
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