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參數(shù)資料
| 型號： | UPD4722 |
| 廠商： | NEC Corp. |
| 元件分類： | 外設及接口 |
| 英文描述： | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| 中文描述： | 電可擦除可編程邏輯器件 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大小： | 132K |
| 代理商： | UPD4722 |
3
μ
PD4722
Truth Table
Driver
STBY
D
IN
D
OUT
Remarks
L
×
Z
Standby mode (DC/DC converter is stopped)
H
L
H
Space level output
H
H
L
Mark level output
Receiver
STBY
EN
R
IN
R
OUT
Remarks
R
3
to R
4
R
1
to R
2
R
3
to R
4
R
1
to R
2
L
L
×
×
H
H
Standby mode 1 (DC/DC converter is stopped)
L
H
L
×
H
H
Standby mode 2 (DC/DC converter is stopped, R
3
and R
4
are operated)
L
H
H
×
L
H
Standby mode 2 (DC/DC converter is stopped, R
3
and R
4
are operated)
H
×
L
H
Mark level input
H
×
H
L
Space level input
3 V
5 V switching
Note 5
V
CHA
Operating mode
L
5 V mode (double step-up)
H
3 V mode (3 times step-up)
H: high-level, L: low-level, Z: high-impedance,
×
: H or L
Note 5
. When switching V
CHA
, standby mode must be selected (STBY = L).
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