L293, L293D
QUADRUPLE HALF-H DRIVERS
SLRS008C − SEPTEMBER 1986 − REVISED NOVEMBER 2004
description/ordering information (continued)
On the L293, external high-speed output clamp diodes should be used for inductive transient suppression.
A V
CC1
terminal, separate from V
CC2
, is provided for the logic inputs to minimize device power dissipation.
The L293and L293D are characterized for operation from 0°C to 70°C.
block diagram
V
CC1
1
0
1
0
1
2
1
3
4
4
16
15
1
0
M
14
13
12
11
2
3
10
9
M
5
6
1
0
7
8
1
0
1
0
M
V
CC2
NOTE: Output diodes are internal in L293D.
FUNCTION TABLE
(each driver)
INPUTS
†
A
H
L
X
EN
H
H
L
OUTPUT
Y
H
L
Z
H = high level, L = low level, X = irrelevant,
Z = high impedance (off)
†
In the thermal shutdown mode, the output is
in the high-impedance state, regardless of
the input levels.
2
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