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參數(shù)資料
| 型號： | MAX3314EEKA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 4/6頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX RS232 460KBPS SOT23-8 |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 類型： | 收發(fā)器 |
| 驅動器/接收器數(shù)： | 1/1 |
| 規(guī)程： | RS232 |
| 電源電壓： | 4.75 V ~ 5.25 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOT-23-8 |
| 供應商設備封裝： | SOT-23-8 |
| 包裝： | 帶卷 (TR) |
Detailed Description
RS-232-Compatible Drivers
The transmitter is an inverting level translator that con-
verts CMOS-logic levels to EIA/TIA-232-compatible lev-
els. It guarantees data rates up to 460kbps with
worst-case loads of 3k
in parallel with 1000pF. When
SHDN is driven low, the transmitter is disabled and put
into 3-state mode. The transmitter input does not have a
pull-up resistor. Connect to ground if unused.
RS-232-Compatible Receivers
The MAX3314’s receiver converts RS-232 signals to
CMOS-logic output levels. The receiver is rated to sig-
nals up to ±25V. The MAX3314’s receiver will remain
active during shutdown mode.
MAX3314 Shutdown Mode
In shutdown mode, the transmitter output is put into
high impedance. This reduces the supply current to
1A. The time required to exit shutdown is less than
2.5s. Table 1 is the shutdown logic truth table.
Applications Information
Capacitor Selection
The capacitor type used is not critical for proper opera-
tion; either polarized or nonpolarized capacitors are
acceptable. If polarized capacitors are used, connect
polarity as shown in the Typical Operating Circuit.
Bypass VCC and V- to ground with at least 0.1F.
Transmitter Output When
Exiting Shutdown
Figure 1 shows the transmitter output when exiting shut-
down mode. The transmitter is loaded with 3k
in par-
allel with 1000pF. The transmitter output displays no
ringing or undesirable transients as the MAX3314
comes out of shutdown. Note that the transmitter is
enabled only when the magnitude of V- exceeds
approximately -3V.
High Data Rates
The MAX3314 maintains minimum RS-232-compatible
±3.7V transmitter output voltage even at high data rates.
Figure 2 shows a transmitter loopback test circuit.
Figure 3 shows the loopback test result at 120kbps, and
Figure 4 shows the same test at 250kbps.
Chip Information
TRANSISTOR COUNT: 128
MAX3314
460kbps, 1A, RS-232-Compatible Transceiver
4
_______________________________________________________________________________________
SHDN
TRANSMITTER
OUTPUT
RECEIVER
OUTPUT
L
High-Z
Active
H
Active
Table 1. Shutdown Logic Truth Table
Figure 1. Transmitter Output When Exiting Shutdown or
Powering Up
1
s/div
SHDN
TOUT
5V/div
0
1.5V/div
0
TIN = GND
TIN = VCC
Figure 2. Loopback Test Circuit
0.1
F
SHDN
TOUT
RIN
TIN
ROUT
VCC
GND
5k
+5V
MAX3314
CAPACITORS MAY BE POLARIZED OR NONPOLARIZED.
0.1
F
-5V
1000pF
V-
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3314EESA | 功能描述:RS-232接口集成電路 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: |
| MAX3314EESA+ | 功能描述:RS-232接口集成電路 460kbps 1uA 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: |
| MAX3314EESA+T | 功能描述:RS-232接口集成電路 460kbps 1uA 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: |
| MAX3314EESA-T | 功能描述:RS-232接口集成電路 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: |
| MAX3314EEUA | 功能描述:RS-232接口集成電路 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: |
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