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| 型号： | MAX3238CAI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/12页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS-232 TRUE 28-SSOP |
| 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： | 5/3 |
| 规程： | RS232 |
| 电源电压： | 3 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
MAX3238
+3.0V to +5.5V, 1A, up to 250kbps, True
RS-232 Transceiver with AutoShutdown Plus
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +3.0V to +5.5V; C1–C4 = 0.1F (tested at 3.3V ±5%), C1–C4 = 0.22F (tested at 3.3V ±10%), C1 = 0.047F and
C2–C4 = 0.33F (tested at 5.0V ±10%); TA = TMIN to TMAX; unless otherwise noted. Typical values are at TA = +25°C.)
Figure 4a
Figure 7a
Figure 4b (Note 2)
VCC = 5V, Figure 4b (Note 2)
VCC = 5V, Figure 4b
IOUT = 1.6mA
IOUT = -1.0mA
VCC = 5V, Figure 4b
CONDITIONS
V
-0.3
0.3
Receiver Input Threshold to
INVALID Output Low
V
2.7
Receiver Input Threshold to
INVALID Output High
sec
15
30
60
Receiver or Transmitter Edge to
Shutdown (tAUTOSHDN)
s
25
Receiver or Transmitter Edge to
Transmitters Enabled (tWU)
s
50
Receiver Positive or Negative
Threshold to INVALID Low (tINVL)
V
0.4
INVALID Output Voltage Low
V
VCC -
0.6
INVALID Output Voltage High
s
0.1
Receiver Positive or Negative
Threshold to INVALID High (tINVH)
UNITS
MIN
TYP
MAX
PARAMETER
Positive threshold
Negative threshold
-2.7
Output Voltage Swing
All transmitter outputs loaded with 3k
to ground
±5.0
±5.4
V
Output Resistance
VCC = V+ = V- = GND, TOUT = 2V
300
10M
VCC
≤ 3.6V
±35
±60
Output Leakage Current
VOUT = ±12V, VCC = 0V to 5.5V,
transmitters disabled
±25
A
| tPHL - tPLH |
430
tPHL
R_IN to R_OUT,
CL = 150pF
tPLH
CL = 150pF to 1000pF
RL = 3k
, CL = 1000pF, one transmitter switching
CL = 150pF to 2500pF
0.15
VCC = 3.3V,
TA = +25°C,
RL = 3
to 7k,
measured from +3V to
-3V or -3V to +3V
Normal operation
| tPHL - tPLH |
s
0.15
Receiver Propagation Delay
kbps
250
Maximum Data Rate
V/s
630
Transition-Region Slew Rate
ns
200
Receiver Output Enable Time
ns
200
Receiver Output Disable Time
ns
100
Transmitter Skew
ns
50
Receiver Skew
TIMING CHARACTERISTICS
Output Short-Circuit Current
VCC > 3.6V
±40
±100
AutoShutdown (FORCEON = GND, FORCEOFF = VCC)
TRANSMITTER OUTPUTS
Note 2: A transmitter/receiver edge is defined as a transition through the transmitter/receiver input logic thresholds.
mA
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