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UT54ACS164245SWC bảng dữ liệu(PDF) 2 Page - Aeroflex Circuit Technology

tên linh kiện UT54ACS164245SWC
Giải thích chi tiết về linh kiện  RadHard Schmitt CMOS 16-bit Bidirectional MultiPurpose Transceiver
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2
PINOUTS
POWER TABLE1
NOTE:
1. V DD2 cannot be tied to V SS while power is applied to VDD1.
Control signals DIRx and OEx are 5 volt tolerant inputs. When
VDD2 is at 3.3 volts, either 3.3 or 5 volt CMOS logic levels can
be applied to all control inputs. For proper operation connect
power to all VDD and ground all V SS pins (i.e., no floating VDD
or VSS input pins). Tie unused inputs to VSS. If VDD1 and
VDD2 are not powered up together, then VDD2 should be pow-
ered up first for proper control of OE and DIR. Until VDD2
reaches 2.75V + 5%, control of the outputs byOE and DIR can-
not be guaranteed. During operation of the part, after power up,
insure VDD1 > VDD2. Tie unused inputs to VSS.
1
2
3
4
5
7
6
48
47
46
45
44
42
43
DIR1
1B1
1B2
VSS
1B3
1B4
VDD1
OE1
1A1
1A2
VSS
1A3
VDD2
8
41
1B5
1A5
1A4
9
40
1B6
1A6
10
39
VSS
VSS
48-Lead Flatpack
Top View
1B7
1B8
2B1
2B2
VSS
2B3
2B4
VDD1
2B5
2B6
11
12
13
14
15
17
16
18
19
20
VSS
2B7
2B8
DIR2
21
22
23
24
38
37
36
35
34
32
33
1A7
1A8
2A1
2A2
VSS
2A4
31
VDD2
2A3
30
2A5
29
2A6
28
VSS
27
2A7
26
2A8
25
OE2
Port B
Port A
OPERATION
5 Volts
3.3 Volts
Voltage Translator
5 Volts
5 Volts
Non Translating
3.3 Volts
3.3 Volts
Non Translating
VSS
VSS
Cold Spare
VSS
3.3V or 5V
Port B Cold Spare



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