A6812KEP データシートの表示（PDF） - Allegro MicroSystems

部品番号

コンポーネント説明

メーカー

A6812KEP

DABiC-IV, 20-BIT SERIAL-INPUT, LATCHED SOURCE DRIVER

Allegro MicroSystems 

6812

6812 20-BIT SERIAL-INPUT,

LATCHED SOURCE DRIVER

PRELIMINARY INFORMATION

(subject to change without notice)

August 28, 1998

A6812xA

LOAD

SUPPLY

1

VBB

SERIAL

DATA OUT

2

OUT20 3

OUT19 4

OUT18 5

OUT 17 6

OUT 16 7

OUT15 8

OUT14 9

OUT13 10

OUT12 11

OUT11 12

BLANKING 13 BLNK

GROUND 14

VDD

28

LOGIC

SUPPLY

27

SERIAL

DATA IN

26 OUT 1

25 OUT 2

24 OUT 3

23 OUT 4

22 OUT5

21 OUT 6

20 OUT7

19 OUT8

18 OUT9

17 OUT 10

ST 2186 STROBE

CLK 2175 CLOCK

Dwg. PP-029-7

ABSOLUTE MAXIMUM RATINGS

at TA = 25°C

Logic Supply Voltage, VDD ................... 7.0 V

Driver Supply Voltage, VBB ................... 60 V

Continuous Output Current Range,

IOUT ......................... -40 mA to +15 mA

Input Voltage Range,

VIN ....................... -0.3 V to VDD + 0.3 V

Package Power Dissipation,

PD ........................................ See Graph

Operating Temperature Range, TA

(Suffix ‘E–’) .................. -40°C to +85°C

(Suffix ‘K–’) ................ -40°C to +125°C

(Suffix ‘S–’) .................. -20°C to +85°C

Storage Temperature Range,

TS ............................... -55°C to +125°C

Caution: These CMOS devices have input static

protection (Class 2) but are still susceptible to

damage if exposed to extremely high static

electrical charges.

DABiC-IV, 20-BIT SERIAL-INPUT,

LATCHED SOURCE DRIVER

The A6812– devices combine a 20-bit CMOS shift register, accom-

panying data latches and control circuitry with bipolar sourcing outputs

and pnp active pull downs. Designed primarily to drive vacuum-

fluorescent displays, the 60 V and -40 mA output ratings also allow

these devices to be used in many other peripheral power driver

applications. The A6812– features an increased data input rate

(compared with the older UCN/UCQ5812-F) and a controlled output

slew rate.

The CMOS shift register and latches allow direct interfacing with

microprocessor-based systems. With a 3.3 V or 5 V logic supply,

typical serial-data input rates are up to 33 MHz.

A CMOS serial data output permits cascade connections in

applications requiring additional drive lines. Similar devices are avail-

able as the A6809– and A6810– (10 bits), A6811– (12 bits), and

A6818– (32 bits).

The A6812– output source drivers are npn Darlingtons, capable of

sourcing up to 40 mA. The controlled output slew rate reduces electro-

magnetic noise, which is an important consideration in systems that

include telecommunications and/or microprocessors and to meet

government emissions regulations. For inter-digit blanking, all output

drivers can be disabled and all sink drivers turned on with a BLANK-

ING input high. The pnp active pull-downs will sink at least 2.5 mA.

Three temperature ranges are available for optimum performance

in commercial (suffix S-), industrial (suffix E-), or automotive (suffix K-)

applications. Package styles are provided for through-hole DIP (suffix

-A), surface-mount SOIC (suffix -LW), or minimum-area surface-mount

PLCC (suffix -EP). Copper lead frames, low logic-power dissipation,

and low output-saturation voltages allow these drivers to source 25 mA

from all outputs continuously to more than +43°C (suffix -LW), +61°C

(suffix -EP), or +77°C (suffix -A).

FEATURES

s Controlled Output Slew Rate s Low Output-Saturation Voltages

s High-Speed Data Storage s Low-Power CMOS Logic

s 60 V Minimum

and Latches

Output Breakdown

s Improved Replacements

s High Data Input Rate

for TL5812–, UCN5812–,

s PNP Active Pull-Downs

and UCQ5812–

Complete part number includes a suffix to identify operating

temperature range (E-, K-, or S-) and package type (-A, -EP, or -LW).

Always order by complete part number, e.g., A6812SLW .

Share Link: