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PDF MIC5801 Data sheet ( Hoja de datos )
| Número de pieza | MIC5801 | |
| Descripción | 4/8-Bit Parallel-Input Latched Drivers | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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MIC5800/5801
4/8-Bit Parallel-Input Latched Drivers
General Description
The MIC5800/5801 latched drivers are high-voltage, high-
current integrated circuits comprised of four or eight
CMOS data latches, a bipolar Darlington transistor driver
for each latch, and CMOS control circuitry for the common
CLEAR, STROBE, and OUTPUT ENABLE functions.
The bipolar/MOS combination provides an extremely low-
power latch with maximum interface flexibility. MIC5800
contains four latched drivers; MIC5801 contains eight
latched drivers.
Data input rates are greatly improved in these devices.
With a 5V supply, they will typically operate at better than
5MHz. With a 12V supply, significantly higher speeds are
obtained. The CMOS inputs are compatible with standard
CMOS, PMOS, and NMOS circuits. TTL or DTL circuits
may require the use of appropriate pull-up resistors. The
bipolar outputs are suitable for use with relays, solenoids,
stepping motors, LED or incandescent displays, and other
high-power loads. Both units have open-collector outputs
and integral diodes for inductive load transient
suppression. The output transistors are capable of sinking
500mA and will sustain at least 50V in the OFF state.
Because of limitations on package power dissipation, the
simultaneous operation of all drivers at maximum rated
current can only be accomplished by a reduction in duty
cycle. Outputs may be paralleled for higher load current
capability.
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com.
Features
• 4.4MHz Minimum Data Input Rate
• High-Voltage, Current Sink Outputs
• Output Transient Protection
• CMOS, PMOS, NMOS, and TTL Compatible Inputs
• Internal Pull-Down Resistors
• Low-Power CMOS Latches
Functional Diagram
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
June 29, 2015
Revision 2.0
1 page  
Micrel, Inc.
Timing Diagram
MIC5800/5801
Timing Conditions
(TA = +25°C, Logic Levels are VDD and Ground, VDD = 5V)
A. Minimum data active time before strobe enabled (data set-up time) ........................................................................ 50ns
B. Minimum data active time after strobe disabled (data hold time) .............................................................................. 50ns
C. Minimum strobe pulse width ...................................................................................................................................... 125ns
D. Typical time between strobe activation and output on to off transition ..................................................................... 500ns
E. Typical time between strobe activation and output off to on transition...................................................................... 500ns
F. Minimum clear pulse width ........................................................................................................................................ 300ns
G. Minimum data pulse width ........................................................................................................................................ 225ns
Truth Table
INN Strobe Clear
01
11
××
0
0
1
/OE
0
0
×
OUTN
t–1 t
× OFF
× ON
× OFF
Information present at an input is transferred to its latch
when the STROBE is high. A high CLEAR input will set all
latches to the output OFF condition regardless of the data
or STROBE input levels. A high /OE will set all outputs to
the off condition, regardless of any other input conditions.
When the /OE is low, the outputs depend on the state of
their respective latches.
× × × 1 × OFF
× 0 0 0 ON ON
×0
0
0
OFF
OFF
× = Irrelevant
t–1 = Previous output state
t = Present output state
June 29, 2015
5
Revision 2.0
5 Page 
Micrel, Inc.
MIC5800/5801
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
Micrel, Inc. is a leading global manufacturer of IC solutions for the worldwide high performance linear and power, LAN, and timing & communications
markets. The Company’s products include advanced mixed-signal, analog & power semiconductors; high-performance communication, clock
management, MEMs-based clock oscillators & crystal-less clock generators, Ethernet switches, and physical layer transceiver ICs. Company
customers include leading manufacturers of enterprise, consumer, industrial, mobile, telecommunications, automotive, and computer products.
Corporation headquarters and state-of-the-art wafer fabrication facilities are located in San Jose, CA, with regional sales and support offices and
advanced technology design centers situated throughout the Americas, Europe, and Asia. Additionally, the Company maintains an extensive network
of distributors and reps worldwide.
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this datasheet. This
information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,
specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability
whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties
relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical
implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 1998 Micrel, Incorporated.
June 29, 2015
11
Revision 2.0
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| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet MIC5801.PDF ] | |
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