UT54ACS540 Datasheet, PDF (1/10 Pages) Aeroflex Circuit Technology – Octal Buffers & Line Drivers, Inverted Three-State Outputs

Standard Products
UT54ACS540/UT54ACTS540
Octal Buffers & Line Drivers, Inverted Three-State Outputs
Datasheet
November 2010
www.aeroflex.com/logic
FEATURES
‰ Three-state outputs drive bus lines or buffer memory address
registers
‰ 1.2μ CMOS
- Latchup immune
‰ High speed
‰ Low power consumption
‰ Single 5 volt supply
‰ Available QML Q or V processes
‰ Flexible package
- 20-pin DIP
- 20-lead flatpack
‰ UT54ACS540 - SMD 5962-96592
‰ UT54ACTS540 - SMD 5962-96593
DESCRIPTION
The UT54ACS540 and the UT54ACTS540 are inverting octal
buffers and line drivers which improve the performance and
density of three-state memory address drivers, clock drivers, and
bus-oriented receivers and transmitters.
The devices are characterized over full military temperature
range of -55°C to +125°C.
FUNCTION TABLE
INPUTS
OUTPUT
1G
2G
An
Yn
L
L
L
H
L
L
H
L
H
X
X
Z
X
H
X
Z
LOGIC SYMBOL
1G ⁽¹⁾
2G ⁽¹⁹⁾
&
EN
PINOUTS
1G
A1
A2
A3
A4
A5
A6
A7
A8
V_SS
A1 ⁽²⁾
A2 ⁽³⁾
A3 ⁽⁴⁾
A4 ⁽⁵⁾
A5 ⁽⁶⁾
A6 ⁽⁷⁾
A7 ⁽⁸⁾
A8 ⁽⁹⁾
(18)
Y1
(17) _Y2
(16) _Y3
(15) _Y4
(14) _Y5
(13) _Y6
(12) _Y7
(11) _Y8
1
Note:
1. Logic symbol in accordance with ANSI/IEEE Std 91-1984 and IEC
Publication 617-12.
20-Pin DIP
Top View
1G
1
20
V_DD
A1 2 19 2G
A2 3 18 Y1
A3 4 17 Y2
A4 ^{5 16} Y3
A5 ^{6 15} Y4
A6 7 14 Y5
A7 8 13 Y6
A8 9 12 Y7
V_SS 10 11 Y8
20-Lead Flatpack
Top View
1 20
V_DD
2 19
2G
3 18
Y1
4 17
Y2
5 16
Y3
6 15
Y4
7 14
Y5
8 13
Y6
9 12
Y7
10 11
Y8