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SN65555 Datasheet(PDF) 1 Page - Texas Instruments

Part No. SN65555
Description  ELECTROLUMINESCENT COLUMIN DRIVERS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

SN65555 Datasheet(HTML) 1 Page - Texas Instruments

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SLDS031A
– APRIL 1985 – REVISED APRIL 1993
Copyright
1993, Texas Instruments Incorporated
4
–1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Each Device Drives 32 Electrodes
90-V Output Voltage Swing Capability
Using Ramped Supply
15-mA Output Source and Sink Current
Capability
High-Speed Serially-Shifted Data Input
Totem-Pole Outputs
Latches on All Driver Outputs
description
The
SN65555,
SN75555,
SN65556,
and
SN75556 are monolithic BIDFETintegrated
circuits designed to drive the column electrodes of
an electroluminescent display. The SN65556 and
SN75556 output sequence is reversed from the
SN65555 and SN75555 for ease in printed-circuit-
board layout.
The devices consist of a 32-bit shift register, 32
latches, and 32 output AND gates. Serial data is
entered into the shift register on the low-to-high
transition of CLOCK. When high, LATCH ENABLE
transfers the shift register contents to the outputs
of the 32 latches. When OUTPUT ENABLE is
high, all Q outputs are enabled. Data must be
loaded into the latches and OUTPUT ENABLE
must be high before supply voltage VCC2 is
ramped up.
Serial data output from the shift register can be
used to cascade shift registers. This output is not
affected
by
LATCH
ENABLE
or
OUTPUT
ENABLE.
The SN65555 and SN65556 are characterized for
operation from
–40 C to 85 C. The SN75555 and
SN75556 are characterized for operation from
0 C to 70 C.
† BIDFET – Bipolar, double-diffused, N-channel and P-channel MOS transistors on same chip. This is a patented process.
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Q17
Q16
Q15
Q14
Q13
Q12
Q11
Q10
Q9
Q8
Q7
Q6
Q5
Q4
Q3
Q2
Q1
SERIAL OUT
CLOCK
GND
Q18
Q19
Q20
Q21
Q22
Q23
Q24
Q25
Q26
Q27
Q28
Q29
Q30
Q31
Q32
OUTPUT ENABLE
DATA IN
LATCH ENABLE
VCC1
VCC2
SN75555 ... N PACKAGE
(TOP VIEW)
Q23
Q24
Q25
Q26
Q27
Q28
Q29
Q30
Q31
Q32
NC
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18 19
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Q11
Q10
Q9
Q8
Q7
Q6
Q5
Q4
Q3
Q2
Q1
20 21 22 23
SN65555, SN75555 ... FN PACKAGE
(TOP VIEW)
5 4
3
21
6
44
42 41 40
43
24 25 26 27 28
NC
– No internal connection


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