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
VCC1
1
0
1
0
1
2
1
3
4
M
5
6
2
1
0
7
8
3
10
9
4
14
13
12
11
16
15
1
0
M
1
0
1
0
M
VCC2
NOTE: Output diodes are internal in L293D.
FUNCTION TABLE
(each driver)
INPUTS†
OUTPUT
A
H
L
X
EN
H
H
L
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
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
