參數(shù)資料
型號: CXA1871S
廠商: Sony Corporation
元件分類: 外設及接口
英文描述: Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????)
中文描述: 單電源RS232C接口線路驅(qū)動器/接收器(單電源RS232C接口線收發(fā)器(2發(fā)2收))
文件頁數(shù): 4/46頁
文件大小: 639K
代理商: CXA1871S
—4—
CXA1871S
Pin Description
Pin
No.
Symbol
Pin
Equivalent circuit
Description
voltage
V
CC
6 k
20 k
20 p
V
CC
V
CC
1
1
2
3
4
5
6
7
25
SECAM
REF
X PAL 1
X PAL 2
X NTSC
APC
V
CC
V1 IN
V2 IN
1.3 V
2.6 V
5 V
9 V
2 V
When the IC is in the SECAM
identification mode, the 4.43 MHz
VCO oscillation waveform is output
from this pin only during the VBLK
period centering on DC = 1 V. If
current of 150 μA is led from this pin
during this identification mode, the IC
switches to the SECAM mode. In the
SECAM mode, DC = 5 V.
Crystal oscillator connection pins.
Connect the PAL/N and 4.43 MHz
crystals to Pin 2, the PAL/M crystal to
Pin 3, and the NTSC crystal to Pin 4.
APC lag-lead filter CR connection pin.
Power supply pin.
Video switch input pins. Sync tip
clamping is performed, so input via
capacitors.
1.2 k
25 k
1.2 k
5
V
CC
V
CC
150
7
V
CC
25
4 k
500
2
3
4
V
CC
V
CC
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