A6818SA Allegro Micro Systems, Inc., A6818SA Datasheet

A6818SA

Manufacturer Part Number

A6818SA

Description

DIP40

Manufacturer

Allegro Micro Systems, Inc.

Datasheets

1.A6818SA.pdf (7 pages)

2.A6818SA.pdf (8 pages)

Specifications of A6818SA

Date_code

04+

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Bonase Electronics (HK) Co., Limited

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A6818SA

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Bonase Electronics (HK) Co., Limited

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Logic Supply Voltage, V

Driver Supply Voltage, V

Continuous Output Current Range,

Input Voltage Range,

Package Power Dissipation,

Operating Temperature Range, T

Storage Temperature Range,

Caution: These CMOS devices have input

static protection (Class 2) but are still

susceptible to damage if exposed to

extremely high static electrical charges.

DATA OUT

BLANKING

(Suffix ‘E–’) .................. -40

(Suffix ‘S–’) .................. -20

GROUND

OUT

SUPPLY

SERIAL

OUT

LOAD

........................................ See Graph

............................... -55

....................... -0.3 V to V

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

BLNK

at T

= 25°C

................... 7.0 V

................... 60 V

CLK

C to +125

C to +85

Dwg. PP-029-4

STROBE

LOGIC

SUPPLY

SERIAL

DATA IN

OUT

CLOCK

+ 0.3 V

6818

accompanying 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 A6818– features an increased data input rate (com-

pared with the older UCN/UCQ5818–F) and a controlled output slew

rate.

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

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

tions requiring additional drive lines. Similar devices are available as

the A6809– and A6810– (10 bits), A6811– (12 bits), and A6812– (20

bits).

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.

commercial (suffix S-) or industrial (suffix E-) applications. Package

styles are provided for through-hole DIP (suffix -A) or minimum-area

surface-mount PLCC (suffix -EP). Copper lead frames, low logic-

power dissipation, and low output-saturation voltages allow these

devices to drive most multiplexed vacuum-fluorescent displays over

the maximum operating temperature range.

I Controlled Output Slew Rate

I High-Speed Data Storage

I 60 V Minimum

I High Data Input Rate

I PNP Active Pull-Downs

temperature range (E- or S-) and package type (-A or -EP). Always

order by complete part number, e.g., A6818SEP .

Output Breakdown

The A6818– devices combine a 32-bit CMOS shift register,

The CMOS shift register and latches allow direct interfacing with

A CMOS serial data output permits cascade connections in applica-

The A6818– output source drivers are npn Darlingtons, capable of

Two temperature ranges are available for optimum performance in

Complete part number includes a suffix to identify operating

DABiC-IV, 32-BIT SERIAL-INPUT,

LATCHED SOURCE DRIVER

I Low Output-Saturation Voltages

I Low-Power CMOS Logic

I Improved Replacements

and Latches

for SN75518N, SN75518NF,

UCN5818–, and UCQ5818–

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