SN65512B Datasheet: Vacuum Fluorescent Display Drivers





SN65512B Vacuum Fluorescent Display Drivers Datasheet

Part Number SN65512B
Description Vacuum Fluorescent Display Drivers
Manufacture etcTI
Total Page 7 Pages
PDF Download Download SN65512B Datasheet PDF

Features: ą • Each Device Drives 12 Lines • 6 0-V Output Voltage Swing Capability • 25-mA Output Source Current Capability • High-Speed Serially-Shifted Data I nput • TTL-Compatible Inputs • Latc hes on All Driver Outputs description T he SN65512B and SN75512B are monolithic BIDFET† integrated circuits designed to drive a dot matrix or segmented vac uum fluorescent display. All device inp uts are diode-clamped pnp inputs and as sume a high logic level when open circu ited. The nominal input threshold volta ge is 1.5 V. Outputs are totem-pole str uctures formed by an npn emitter-follow er and double-diffused MOS (DMOS) trans istors. The device consists of a 12-bit shift register, 12 latches, and 12 out put AND gates. Serial data is entered i nto the shift register on the low-to-hi gh transition of CLOCK. When high, LATC H ENABLE transfers the shift register c ontents to the outputs of the 12 latche s. The active-low STROBE input enables all Q outputs. Serial data output from the shift register can be used to casca.

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Each Device Drives 12 Lines
60-V Output Voltage Swing Capability
25-mA Output Source Current Capability
High-Speed Serially-Shifted Data Input
TTL-Compatible Inputs
Latches on All Driver Outputs
description
The SN65512B and SN75512B are monolithic
BIDFETintegrated circuits designed to drive a
dot matrix or segmented vacuum fluorescent
display.
All device inputs are diode-clamped pnp inputs
and assume a high logic level when open
circuited. The nominal input threshold voltage is
1.5 V. Outputs are totem-pole structures formed
by an npn emitter-follower and double-diffused
MOS (DMOS) transistors.
The device consists of a 12-bit shift register,
12 latches, and 12 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 12 latches. The active-low STROBE input
enables all Q outputs. Serial data output from the
shift register can be used to cascade shift
registers. This output is not affected by LATCH
ENABLE or STROBE.
The SN65512B is characterized for operation
from − 40°C to 85°C. The SN75512B is
characterized for operation from 0°C to 70°C.
SN65512B, SN75512B
VACUUM FLUORESCENT DISPLAY DRIVERS
ą
SLDS016A − DECEMBER 1985 − REVISED OCTOBER 1989
DW OR N PACKAGE
(TOP VIEW)
Q11
Q12
STROBE
SERIAL OUT
DATA IN
VCC1
CLOCK
LATCH ENABLE
Q1
Q2
1
2
3
4
5
6
7
8
9
10
20 Q10
19 Q9
18 Q8
17 Q7
16 VCC2
15 GND
14 Q6
13 Q5
12 Q4
11 Q3
logic symbol
8
LATCH ENABLE
3
STROBE
7
CLOCK
TTL / VAC
FLUOR DISPLAY
SRG12
C1/
5
DATA IN
2D 3
2D 3
2D 3
2D 3
2D 3
2D 3
2D 3
2D 3
2D 3
2D 3
2D 3
2D 3
9
Q1
10
Q2
11
Q3
12
Q4
13
Q5
14
Q6
17
Q7
18
Q8
19
Q9
20
Q10
1
Q11
2
Q12
4
SERIAL OUT
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
† BIDFET − Bipolar, double-diffused, N-channel and P-channel MOS transistors on same chip. This is a patented process.
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.
Copyright 1989, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
4−3

                    






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