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ETC

UT54ACTS245 Datasheet Preview

UT54ACTS245 Datasheet

Ocral Bus Transceiver

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UT54ACS245/UT54ACTS245
Radiation-Hardened
Octal Bus Transceiver with Three-State Outputs
FEATURES
Three-state outputs drive bus line directly
radiation-hardened CMOS
- Latchup immune
High speed
www.DataSheetL4Uo.wcopmower consumption
Single 5 volt supply
Available QML Q or V processes
Flexible package
- 20-pin DIP
- 20-lead flatpack
DESCRIPTION
The UT54ACS245 and the UT54ACTS245 are non-inverting
octal bus transceivers designed for asynchronous two-way com-
munication between data buses. The control function imple-
mentation minimizes external timing requirements.
The devices allow data transmission from the A bus to the B bus
or from the B bus to the A bus depending upon the logic level
at the direction control (DIR) input. The enable input (G) dis-
ables the device so that the buses are effectively isolated.
The devices are characterized over full military temperature
range of -55 C to +125 C.
FUNCTION TABLE
ENABLE DIRECTION
G CONTROL DIR
OPERATION
LL
B Data To A Bus
LH
A Data To B Bus
HX
Isolation
PINOUTS
DIR
A1
A2
A3
A4
A5
A6
A7
A8
VSS
20-Pin DIP
Top View
DIR 1 20 VDD
A1 2 19 G
A2 3 18 B1
A3 4 17 B2
A4 5 16 B3
A5 6 15 B4
A6 7 14 B5
A7 8 13 B6
A8 9 12 B7
VSS 10 11 B8
20-Lead Flatpack
Top View
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
VDD
G
B1
B2
B3
B4
B5
B6
B7
B8
LOGIC SYMBOL
(19)
G
(1)
DIR
(2)
A1
(3)
A2
(4)
A3
(5)
A4
(6)
A5
A6 (7)
(8)
A7
(9)
A8
G3
3 EN1 (BA)
3 EN2 (AB)
1
2
(18)
B1
(17)
B2
(16)
B3
(15)
B4
(14)
B5
(13)
(12)
B6
B7
(11)
B8
Note:
1. Logic symbol in accordance with ANSI/IEEE Std 91-1984 and IEC
Publication 617-12.
165 RadHard MSI Logic




ETC

UT54ACTS245 Datasheet Preview

UT54ACTS245 Datasheet

Ocral Bus Transceiver

No Preview Available !

LOGIC DIAGRAM
www.DataSheet4U.com
(1)
DIR
(2)
A1
(3)
A2
(4)
A3
(5)
A4
(6)
A5
A6 (7)
A7 (8)
A8 (9)
UT54ACS245/UT54ACTS245
(19)
G
(18)
B1
(17) B2
(16)
B3
(15) B4
(14) B5
(13) B6
(12) B7
(11) B8
RadHard MSI Logic
166


Part Number UT54ACTS245
Description Ocral Bus Transceiver
Maker ETC
Total Page 6 Pages
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