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參數(shù)資料
| 型號： | DS14C238WMX/NOPB |
| 廠商： | National Semiconductor |
| 文件頁數(shù)： | 10/13頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DVR/RCVR SINGLE SUPP 24-SOIC |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類型： | 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 4/4 |
| 規(guī)程： | RS232 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-SOIC |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | *DS14C238WMX *DS14C238WMX/NOPB DS14C238WMX DS14C238WMX/NOPBTR DS14C238WMXTR DS14C238WMXTR-ND |
SNLS084C – MAY 1999 – REVISED APRIL 2013
Figure 5. Receiver Propagation Delays and Noise Rejection
PIN DESCRIPTIONS
VCC (pin 9)— Power supply pin for the device,
+5V (±10%).
V+ (pin 11)—Positive supply for TIA/EIA-232-E drivers. Recommended external capacitor: C4 = 1.0
μF (6.3V). This supply is not intended
to be loaded externally.
V
(pin 15)—Negative supply for TIA/EIA-232-E drivers. Recommended external capacitor: C3 = 1.0 μF (16V). This supply is not intended
to be loaded externally.
C1+, C1
(pins 10 and 12)— External capacitor connection pins. Recommended capacitor – 1.0 μF (6.3V).
C2+, C2
(pins 13 and 14)— External Capacitor connection pins. Recommended capacitor – 1.0 μF (16V).
DIN 1–4 (pins 5, 18, 19, and 21)— Driver input pins are TTL/CMOS compatible. Inputs of unused drivers may be left open, an internal pull-
up resistor (500 k
Ω minimum, typically 5 MΩ) pulls input to VCC. Output will be LOW for open inputs.
DOUT 1–4 (pins 2, 1, 24, and 20)— Driver output pins conform to TIA/EIA-232-E levels.
RIN1 1–4 (pins 3, 7, 23, and 16)— Receiver input pins accept TIA/EIA-232-E input voltages (±15V). Receivers feature a noise filter and
specified hysteresis of 200 mV. Unused receiver input pins may be left open. Internal input resistor (5 k
Ω) pulls input LOW, providing a
failsafe HIGH output.
ROUT 1–4 (pins 4, 6, 22, and 17)— Receiver output pins are TTL/CMOS compatible. Receiver output HIGH voltage is specified for both
CMOS and TTL load conditions.
GND (pin 8)—Ground Pin.
6
Copyright 1999–2013, Texas Instruments Incorporated
Product Folder Links: DS14C238
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