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| 型号： | MAX3218EAP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC TXRS RS-232 W/SHTDWN 20SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 类型： | 线路收发器 |
| 驱动器/接收器数： | 2/2 |
| 规程： | RS232 |
| 电源电压： | 1.8 V ~ 4.25 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 带卷 (TR) |
MAX3218
Diode Selection
Key diode specifications are fast recovery time (<10ns),
average current rating (>100mA), and peak current rat-
ing (>350mA). Inexpensive fast silicon diodes, such as
the 1N6050, are generally recommended. More expen-
sive Schottky diodes improve efficiency and give slightly
better performance at very low V CC voltages. Table 1
lists suppliers of both surface-mount and through-hole
diodes. 1N914s are usually satisfactory, but specifica -
tions and performance vary widely with different manu-
facturers.
Capacitor Selection
Use capacitors with values at least as indicated in
Figure 1. Capacitor C2 determines the ripple on V+, but
not the absolute voltage. Capacitors C1 and C3 deter -
mine both the ripple and the absolute voltage of V-.
Bypass VCC to GND with at least 1 F (C4) placed close
to pins 5 and 6. If the V CC line is not bypassed else -
where (e.g., at the power supply), increase C4 to 4.7F.
You may use ceramic or polarized capacitors in all
locations. If you use polarized capacitors, tantalum
types are preferred because of the high operating fre-
quency of the power supplies (about 250kHz). If alu-
minum electrolytics are used, higher capacitance
values may be required.
1A Supply Current, 1.8V to 4.25V-Powered
RS-232 Transceiver with AutoShutdown
6
_______________________________________________________________________________________
MANUFACTURER
PHONE
PART NUMBER
FAX
USA (814) 237-1431
LQH4N150K-TA
Murata-Erie
USA (814) 238-0490
USA (708) 956-0666
Japan (03) 3607-5111
CD43150
Sumida
USA (708) 956-0702
Japan (03) 3607-5428
USA (508) 853-5000
TMPD6050LT
Allegro
USA (508) 853-7556
USA (708) 803-6100
Japan (03) 3278-5111
NLC453232T-150K
TDK
USA (708) 803-6296
Japan (03) 3278-5358
USA (516) 435-1110
CMPSH-3 (Schottky)
Central Semiconductor
USA (516) 435-1824
USA (408) 749-0510
MMBD6050LT1 (silicon)
Motorola
USA (408) 991-7420
USA (401) 762-3800
PMBD6050 (silicon)
Philips
USA (401) 767-4493
USA (408) 749-0510
1N6050 (silicon),
1N5817 (Schottky)
Motorola
USA (408) 991-7420
Table 1. Suggested Component Suppliers
GND
T2
T1
T2OUT
R1IN
R2IN
T1OUT
C1-
C1+
V-
T2IN
R1OUT
R2OUT
T1IN
14
18
C3
1
F
C1
0.47
F
C4
1
F
C2
1
F
16
15
13
12
11
5, 17, 20
VCC
3
61
19
4
2
7
8
9
10
1.8V to
4.25V
LX
15
H
1N6050
V+
FORCEON
INVALID
FORCEOFF
5k
R1
R2
MAX3218
Figure 1. Typical Operating Circuit
Inductors
Diodes—Surface-Mount
Diodes—Through-Hole
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相关代理商/技术参数 |
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| MAX3218EPP | 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: |
| MAX3218EWP | 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: |
| MAX3218EWP-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: |
| MAX321C/D | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| MAX321CPA | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
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