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參數(shù)資料
| 型號： | MAX3238EEAI |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 3/14頁 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS232 250KBPS 28-SSOP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 46 |
| 類型： | 線路收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 5/3 |
| 規(guī)程： | RS232 |
| 電源電壓： | 3 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SSOP（0.209"，5.30mm 寬） |
| 供應商設備封裝： | 28-SSOP |
| 包裝： | 管件 |
MAX3238E/MAX3248E
______________________________________________________________________________________
11
Transmitter Outputs when
Recovering from Shutdown
Figure 7 shows two transmitter outputs when recovering
from shutdown mode. As they become active, the out-
puts are shown going to opposite RS-232 levels (one
transmitter input is high, the other is low). Each trans-
mitter is loaded with 3k
in parallel with 2500pF. The
transmitter outputs display no ringing or undesirable
transients as they come out of shutdown. Note that the
transmitters are enabled only when the magnitude of V-
exceeds approximately 3V.
High Data Rates
The MAX3238E/MAX3248E maintain the RS-232 ±5.0V
minimum transmitter output voltage even at high data
rates. Figure 8 shows a transmitter loopback test cir-
cuit. Figure 9 shows a loopback test result at 120kbps,
VCC = 3.3V, C1–C4 = 0.1
F, CLOAD = 1000pF
2
s/div
T1IN
T1OUT
R1OUT
+5V
0
+5V
-5V
Figure 10. Loopback Test Result at 250kbps
VCC = 3.3V, C1–C4 = 0.1
F, CLOAD = 1000pF
2
s/div
T1IN
T1OUT
R1OUT
0
+5V
-5V
Figure 9. Loopback Test Result at 120kbps
4
s/div
5V/div
2V/div
T2OUT
T1OUT
FORCEON =
FORCEOFF
VCC = 3.3V, C1–C4 = 0.1
F, RLOAD = 3k, CLOAD = 2500pF
Figure 7. Transmitter Outputs when Recovering from Shutdown
or Powering Up
MAX3238E
MAX3248E
5k
R_ IN
R_ OUT
C2-
C2+
C1-
C1+
V-
V+
VCC
C4
C3*
C1
C2
VCC
FORCEOFF
T_ OUT
T_ IN
GND
VCC
*C3 CAN BE RETURNED TO VCC OR GND.
FORCEON
1000pF
Figure 8. Loopback Test Circuit
+3.0V to +5.5V, 10nA, 250kbps RS-232 Transceivers
with ±15kV ESD-Protected I/O and Logic Pins
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3238EEAI+ | 功能描述:RS-232接口集成電路 3-5.5V 250kbps Transceiver RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX3238EEAI+T | 功能描述:RS-232接口集成電路 3-5.5V 250kbps Transceiver RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX3238EEAI-T | 功能描述:RS-232接口集成電路 3-5.5V 250kbps Transceiver RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX3238EECAI | 制造商:Exar Corporation 功能描述:Line Transceiver, 5-Driver, 3-Receiver, 28 Pin, Plastic, SSOP |
| MAX3238EEEAI | 制造商:Exar Corporation 功能描述:Line Transceiver, 5-Driver, 3-Receiver, 28 Pin, Plastic, SSOP |
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