A6818SEP

A6818SEP Datasheet

A6818

Part	Datasheet
A6818SEP	A6818SEP (pdf)

Related Parts	Information
A6818SEPTR-T	A6818SEPTR-T
A6818SEPTR	A6818SEPTR
A6818KEPTR	A6818KEPTR
A6818EEPTR-T	A6818EEPTR-T
A6818EEPTR	A6818EEPTR
A6818EEP-T	A6818EEP-T
A6818EEP	A6818EEP
A6818SEP-T	A6818SEP-T

PDF Datasheet Preview
A6818 DABiC-IV 32-Bit Serial Input Latched Source Driver Controlled output slew rate 60 V minimum output break down PNP active pull-downs Low-power CMOS logic and latches High-speed data storage High data-input rate Low output-saturation voltages Improved replacements for SN75518N, SN75518NF, UCN5818x, and UCQ5818x Package 44 pin PLCC suffix EP The A6818 device combines a 32-bit CMOS shift register, 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 mA output ratings also allow this device to be used in many other peripheral power driver applications. The A6818 features an increased data-input rate compared with the older UCN/UCQ5818x and a controlled output slew rate. The CMOS shift register and latches allow direct interfacing with microprocessor-based systems. With a or 5 V logic supply, typical serial data-input rates are up to 33 MHz. A CMOS serial data output permits cascaded connections in applications requiring additional drive lines. Similar devices are available as the A6810 10-bit and A6812 20-bit . The A6818 output source drivers are NPN Darlingtons, capable of sourcing up to 40 mA. The controlled output slew rate reduces electromagnetic noise, which is an important consideration in systems that include telecommunications and/or microprocessors and to meet government emissions Not to scale Continued on the next CLOCK SERIAL DATA IN STROBE BLANKING Functional Block Diagram SERIAL-PARALLEL SHIFT REGISTER LATCHES LOGIC SUPPLY SERIAL DATA OUT MOS BIPOLAR LOAD SUPPLY GROUND 26182.128F OUT 1 OUT 2 OUT 3 OUT N Dwg. FP-013-1 A6818 DABiC-IV 32-Bit Serial Input Latched Source Driver Description continued regulations. For inter-digit blanking, all output drivers can be disabled and all sink drivers turned on with a BLANKING input high. The PNP active pull-downs will sink at least mA. Three temperature ranges are available for optimum performance in commercial suffix S- , industrial E- , and extended industrial K- applications. The package style provided is the 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. The lead Pb free versions have 100% matte tin leadframe plating. Selection Guide A6818EEPTR-T A6818KEPTR A6818SEPTR-T Pb-free Packing 450 pieces/13-in. reel 450 pieces/13-in. reel 450 pieces/13-in. reel Ambient Temperature TA °C to 85 to 125 to 85 Absolute Maximum Ratings* Characteristic Notes

PDF Datasheet Preview

A6818

DABiC-IV 32-Bit Serial Input Latched Source Driver

Controlled output slew rate 60 V minimum output break down PNP active pull-downs Low-power CMOS logic and latches High-speed data storage High data-input rate Low output-saturation voltages Improved replacements for SN75518N, SN75518NF,

UCN5818x, and UCQ5818x

Package 44 pin PLCC suffix EP

The A6818 device combines a 32-bit CMOS shift register, 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 mA output ratings also allow this device to be used in many other peripheral power driver applications. The A6818 features an increased data-input rate compared with the older UCN/UCQ5818x and a controlled output slew rate.

The CMOS shift register and latches allow direct interfacing with microprocessor-based systems. With a or 5 V logic supply, typical serial data-input rates are up to 33 MHz.

A CMOS serial data output permits cascaded connections in applications requiring additional drive lines. Similar devices are available as the A6810 10-bit and A6812 20-bit .

The A6818 output source drivers are NPN Darlingtons, capable of sourcing up to 40 mA. The controlled output slew rate reduces electromagnetic noise, which is an important consideration in systems that include telecommunications and/or microprocessors and to meet government emissions

Not to scale

Continued on the next

CLOCK SERIAL DATA IN

STROBE

BLANKING

Functional Block Diagram

SERIAL-PARALLEL SHIFT REGISTER LATCHES

LOGIC SUPPLY

SERIAL DATA OUT

MOS BIPOLAR

LOAD SUPPLY

GROUND 26182.128F

OUT 1 OUT 2 OUT 3

OUT N

Dwg. FP-013-1

A6818

DABiC-IV 32-Bit Serial Input Latched Source Driver

Description continued regulations. For inter-digit blanking, all output drivers can be disabled and all sink drivers turned on with a BLANKING input high. The PNP active pull-downs will sink at least mA.

Three temperature ranges are available for optimum performance in commercial suffix S- , industrial E- , and extended industrial K- applications. The package style provided is the 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.

The lead Pb free versions have 100% matte tin leadframe plating.

Selection Guide

A6818EEPTR-T A6818KEPTR A6818SEPTR-T

Pb-free

Packing
450 pieces/13-in. reel 450 pieces/13-in. reel 450 pieces/13-in. reel

Ambient Temperature TA °C to 85
to 125
to 85

Absolute Maximum Ratings*

Characteristic

Notes

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived A6818SEP Datasheet file may be downloaded here without warranties.

Datasheet ID: A6818SEP 516056