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TPIC2801 Scheda tecnica(PDF) 1 Page - Texas Instruments

Il numero della parte TPIC2801
Spiegazioni elettronici  OCTAL INTELLIGENT-POWER SWITCH WITH SERIAL INPUT
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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TPIC2801
OCTAL INTELLIGENT POWER SWITCH
WITH SERIAL INPUT
SLIS008 − D3282, AUGUST 1989 − REVISED JUNE 1990
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77001
Copyright
1990, Texas Instruments Incorporated
2−1
8-Bit Serial-In Parallel-Out Driver
1-A Output Current Capability Per Channel
or 8-A Total Current
Overcurrent Limiting andOut-of-Saturation
Voltage Protection on Driver Outputs
Contains Eight Open-Collector Saturating
Sink Outputs With Low On-State Voltage
High-Impedance Inputs With Hysteresis Are
Compatible With TTL or CMOS Levels
Very Low Standby Power
20 mW Typical
Status of Output Drivers May Be Monitored
at Serial Output
3-State Serial Output Permits Serial
Cascading or Wire-AND Device
Connections
25-V Transient Clamping With Inductive
Switching on Outputs, 40-mJ Rating Per
Driver Output
description
The TPIC2801 octal intelligent-power switch is a monolithic BIDFETintegrated circuit designed to sink currents
up to 1 A at 30 V simultaneously at each of eight driver outputs under serial input data control. Status of the
individual driver outputs is available in serial data format. The driver outputs have overcurrent limiting and
out-of-saturation voltage protection features. Applications include driving solenoids, relays, dc motors, lamps,
and other medium-current or high-voltage loads.
The device contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit parallel latch, which
independently controls each of the eight Y-output drivers.
Data is entered into the device serially via the serial input (SI) and goes directly into the lowest bit (0) of the shift
register. Using proper timing signals, the input data is passed to the corresponding output latch and output driver.
A logic-high bit at SI turns the corresponding output driver (Yn)off. A logic-low bit at SI turns the corresponding
output driver on. Serial data is transferred into SI on the high-to-low transition of serial clock (SCLK) input in 8-bit
bytes with data for the Y7 output (most significant bit) first and data for Y0 output (least significant bit) last. Both
SI and SCLK are active when serial input-output enable (SIOE) input is low and are disabled when SIOE is high.
Each driver output is monitored by a voltage comparator that compares the Y-output voltage level with an
internal out-of-saturation threshold voltage reference level. The logic state of the comparator output is
dependent upon whether the Y output is greater or smaller than the reference voltage level. An activated driver
output is unlatched and turned off when the output voltage exceeds the out-of-saturation threshold voltage level
except when the internal unlatch enable is low and disabled. The high-to-low transition of SIOE transfers the
logic state of the comparator output to the shift register.
† BIDFET − Bipolar, double-diffused, N-channel and P-channel MOS transistors on same chip. This is a patented process.
The tab is electrically connected to GND.
1
2
15
3
4
5
6
7
8
9
10
11
13
12
14
SI
Y4
Y7
Y6
Y5
SO
GND
SCLK
SIOE
Y0
Y1
Y2
Y3
RST
KV PACKAGE
(TOP VIEW)
VCC
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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