SN75556 Datasheet | Electroluminescent Column Drivers





(Datasheet) SN75556 Datasheet PDF Download

Part Number SN75556
Description Electroluminescent Column Drivers
Manufacture etcTI
Total Page 9 Pages
PDF Download Download SN75556 Datasheet PDF

Features: Each Device Drives 32 Electrodes 90-V Ou tput Voltage Swing Capability Using Ram ped Supply 15-mA Output Source and Sink Current Capability High-Speed Serially -Shifted Data Input Totem-Pole Outputs Latches on All Driver Outputs descripti on The SN65555, SN75555, SN65556, and S N75556 are monolithic BIDFET† integra ted circuits designed to drive the colu mn 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 ent ered into the shift register on the low -to-high transition of CLOCK. When high , LATCH ENABLE transfers the shift regi ster contents to the outputs of the 32 latches. When OUTPUT ENABLE is high, al l Q outputs are enabled. Data must be l oaded into the latches and OUTPUT ENABL E must be high before supply voltage VC C2 is ramped up. Serial data output from the shift register can b.

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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.
SLDS031A APRIL 1985 REVISED APRIL 1993
SN75555 . . . N PACKAGE
(TOP VIEW)
Q17
Q16
Q15
Q14
Q13
Q12
Q11
Q10
Q9
Q8
Q7
Q6
Q5
Q4
Q3
Q2
Q1
SERIAL OUT
CLOCK
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40 Q18
39 Q19
38 Q20
37 Q21
36 Q22
35 Q23
34 Q24
33 Q25
32 Q26
31 Q27
30 Q28
29 Q29
28 Q30
27 Q31
26 Q32
25 OUTPUT ENABLE
24 DATA IN
23 LATCH ENABLE
22 VCC1
21 VCC2
SN65555, SN75555 . . . FN PACKAGE
(TOP VIEW)
Q11
Q10
Q9
Q8
Q7
Q6
Q5
Q4
Q3
Q2
Q1
6 5 4 3 2 1 44 43 42 41 40
7 39
8 38
9 37
10 36
11 35
12 34
13 33
14 32
15 31
16 30
17 29
18 19 20 21 22 23 24 25 26 27 28
Q23
Q24
Q25
Q26
Q27
Q28
Q29
Q30
Q31
Q32
NC
NC No internal connection
BIDFET Bipolar, double-diffused, N-channel and P-channel MOS transistors on same chip. This is a patented process.
Copyright 1993, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
41

                    
     






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