UT54ACTS245E Datasheet, PDF (1/9 Pages) Aeroflex Circuit Technology – Octal Bus Transceiver with Three-State Outputs

UT54ACTS245E
Octal Bus Transceiver with Three-State Outputs
July 20013
www.aeroflex.com/Logic
Datasheet
FEATURES
 Three-state outputs drive bus line directly
 m CRH CMOS process
- Latchup immune
 High speed
 Low power consumption
 Wide power supply operating range of 3.0V to 5.5V
 Available QML Q or V processes
Flexible package
 - 20-lead flatpack
UT54ACTS245E-SMD-5962-96573
DESCRIPTION
The UT54ACTS245E is a non-inverting octal bus transceiver
designed for asynchronous two-way communication between
data buses. The control function implementation minimizes
external timing requirements.
The device allows 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)
disables the device so that the buses are effectively isolated.
The device is characterized over full HiRel temperature range
of -55C to +125C.
FUNCTION TABLE
ENABLE DIRECTION
G
CONTROL DIR
OPERATION
L
L
B Data To A Bus
L
H
A Data To B Bus
H
X
Isolation
PINOUTS
DIR
A1
A2
A3
A4
A5
A6
A7
A8
V_SS
20-Lead Flatpack
Top View
1 20
V_DD
2 19
G
3 18
B1
4 17
B2
5 16
B3
6 15
B4
7 14
B5
8 13
B6
9 12
B7
10 11
B8
LOGIC SYMBOL
(19)
G
(1)
DIR
(2)
A1
(3)
A2
(4)
A3
(5)
A4
(6)
A5
(7)
A6
(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.
1