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| 型號： | TIL293D |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 50 AMP LATCHING POWER RELAY |
| 中文描述： | 翻兩番半H驅(qū)動 |
| 文件頁數(shù)： | 1/5頁 |
| 文件大小： | 93K |
| 代理商： | TIL293D |
L293D
QUADRUPLE HALF-H DRIVER
SLRS008A – SEPTEMBER 1986 – REVISED MAY 1990
Copyright
1990, Texas Instruments Incorporated
3–1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
600-mA Output Current Capability Per
Driver
Pulsed Current 1.2-A Per Driver
Output Clamp Diodes for Inductive
Transient Suppression
Wide Supply Voltage Range
4.5 V to 36 V
Separate Input-Logic Supply
Thermal Shutdown
Internal ESD Protection
High-Noise-Immunity Inputs
Functional Replacement for SGS L293D
description
The L293D is a quadruple high-current half-H
driver designed to provide bidirectional drive
currents of up to 600-mA at voltages from 4.5 V to
36 V. It is designed to drive inductive loads such as
relays, solenoids, dc and bipolar stepping motors,
as well as other high-current/high-voltage loads in
positive-supply applications.
All inputs are TTL-compatible. Each output is a
complete totem-pole drive circuit with a Darlington
transistor sink and a pseudo-Darlington source.
Drivers are enabled in pairs with drivers 1 and 2
enabled by 1,2EN and drivers 3 and 4 enabled by
3,4EN. When an enable input is high, the
associated drivers are enabled, and their outputs
are active and in phase with their inputs. External
high-speed output clamp diodes should be used
for inductive transient suppression. When the
enable input is low, those drivers are disabled, and
their outputs are off and in a high-impedance
state. With the proper data inputs, each pair of
drivers form a full-H (or bridge) reversible drive
suitable for solenoid or motor applications.
A V
CC1
terminal, separate from V
CC2
, is provided
for the logic inputs to minimize device power
dissipation.
The L293D is designed for operation from 0
°
C
to 70
°
C.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1,2EN
1A
1Y
2Y
2A
V
CC2
V
CC1
4A
4Y
3Y
3A
3,4EN
NE PACKAGE
(TOP VIEW)
HEAT SINK AND
GROUND
HEAT SINK AND
GROUND
logic symbol
4A
3,4EN
3A
2A
1,2EN
1A
15
9
10
7
1
2
4Y
3Y
2Y
1Y
14
11
6
3
EN
EN
EN
EN
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
logic diagram
4A
3,4EN
3A
2A
1,2EN
1A
15
9
10
7
1
2
4Y
3Y
2Y
1Y
14
11
6
3
INPUTS
A
H
L
X
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.
OUTPUT
Y
FUNCTION TABLE
(each driver)
EN
H
H
L
H
L
Z
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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