UT54ACS164245S AEROFLEX [Aeroflex Circuit Technology], UT54ACS164245S Datasheet - Page 2

• Manufacturer Part Number: UT54ACS164245S
• Description: RadHard Schmitt CMOS 16-bit Bidirectional MultiPurpose Transceiver
• Manufacturer: AEROFLEX [Aeroflex Circuit Technology]

PINOUTS
VDD1
VDD1
DIR2
DIR1
2B7
2B8
1B7
1B8
2B1
2B2
2B3
2B4
2B5
2B6
V
1B1
1B2
1B3
1B4
1B5
1B6
V
V
V
SS
SS
SS
SS
48-Lead Flatpack
Top View
21
22
23
24
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
10
48
38
37
36
35
34
33
32
31
30
29
47
46
45
44
43
42
41
40
39
28
27
26
25
OE1
1A1
1A2
1A3
1A4
VDD2
1A5
1A6
V
1A7
1A8
2A1
2A2
V
2A3
2A4
VDD2
2A5
2A6
V
V
2A7
2A8
O E2
SS
SS
SS
SS
2
POWER TABLE
NOTE:
1. V
Control signals DIRx and OEx are 5 volt tolerant inputs. When
V
be applied to all control inputs. For proper operation connect
power to all V
or V
V
ered up first for proper control of OE and DIR. Until V
reaches 2.75V + 5%, control of the outputs by OE and DIR can-
not be guaranteed. During operation of the part, after power up,
insure V
DD2
DD2
DD2
SS
3.3 Volts
5 Volts
5 Volts
Port B
is at 3.3 volts, either 3.3 or 5 volt CMOS logic levels can
are not powered up together, then V
cannot be tied to V
V
V
input pins). Tie unused inputs to V
SS
SS
DD1
> V
DD
DD2
and ground all V
1
. Tie unused inputs to V
3.3V or 5V
3.3 Volts
3.3 Volts
SS
5 Volts
Port A
V
while power is applied to V
SS
SS
pins (i.e., no floating V
Voltage Translator
Port B Cold Spare
Non Translating
Non Translating
OPERATION
SS
DD2
Cold Spare
. If V
SS
D D 1
should be pow-
.
.
DD1
and
DD2
DD