The merging of low-power CMOS logic and bipolar output power

drivers permit the UCN5841/42A, UCN5841/42LW, and A5841/42SLW

integrated circuits to be used in a wide variety of peripheral power

driver applications. Each device has an eight-bit CMOS shift register

and CMOS control circuitry, eight CMOS data latches, and eight bipolar

current-sinking Darlington output drivers. The 500 mA npn Darlington

outputs, with integral transient-suppression diodes, are suitable for use

with relays, solenoids, and other inductive loads. Except for packaging

and the maximum driver output voltage ratings, the UCN5841A,

UCN5841LW, A5841SLW, UCN5842A, UCN5842LW, and A5842SLW

are identical. All package variations of the 5842 offer premium perfor-

mance with a minimum output-breakdown voltage rating of 80 V (50 V

sustaining). All drivers can be operated with a split supply where the

negative supply is up to -20 V.

BiMOS II devices have higher data-input rates than the earlier

BiMOS circuits. With a 5 V logic supply, they will typically operate at

better than 5 MHz. With a 12 V supply, significantly higher speeds are

obtained. The CMOS inputs are compatible with standard CMOS and

NMOS logic levels. TTL circuits may require the use of appropriate

pull-up resistors. By using the serial data output, drivers can be

cascaded for interface applications requiring additional drive lines.

The UCN584xA devices are furnished in a standard 18-pin plastic

DIP; the UCN584xLW devices are in an 18-lead surface-mountable

wide-body SOIC package; the A584xSLW devices are provided in a 20-

lead wide-body SOIC package with improved thermal characteristics.

The A5841SLW and UCN5841LW drivers are also available for

operation to a temperature of -40

°C. To order, change the suffix from

‘SLW’ to ‘ELW’, or change the prefix from ‘UCN’ to ‘UCQ’.

FEATURES

I To 3.3 MHz Data-Input Rate

I CMOS, NMOS, TTL Compatible Inputs

I Internal Pull-Up/Pull-Down Resistors

I Low-Power CMOS Logic and Latches,

I High-Voltage Current-Sink Outputs

I Output Transient-Protection Diodes

I Single or Split Supply Operation

I DIP or SOIC Packaging

I Automotive Capable

BiMOS II 8-BIT SERIAL-INPUT,

LATCHED DRIVERS

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

A5841SLW .

5842

SUB

2

3

4

5

6

7

8

SERIAL

DATA OUT

SERIAL

DATA IN

OUTPUT

ENABLE

LOGIC

SUPPLY

STROBE

LOGIC

GROUND

CLOCK

CLK

ST

OE

1

12

13

14

15

16

17

18

9

SUB

10

11

Dwg. PP-026-1

K

UCN5841A & UCN5842A

Note that the UCN584xA (dual in-line package) and

UCN584xLW (small-outline IC package) are electrically

identical and share a common terminal number assignment.

ABSOLUTE MAXIMUM RATINGS

at 25

(5841) . . . . . . . . . . . . . . . . . . . . . .

50 V

(5842) . . . . . . . . . . . . . . . . . . . . . .

80 V

(5841) . . . . . . . . . . . . . . . . . . . . .

35 V†

(5842) . . . . . . . . . . . . . . . . . . . . .

50 V†

Logic Supply Voltage Range,

-20 V

Input Voltage Range,

Continuous Output Current,

500 mA

Package Power Dissipation,

Operating Temperature Range,

-20

Storage Temperature Range,

-55

†For inductive load applications.

Caution: CMOS devices have input static protection

but are susceptible to damage when exposed to

extremely high static electrical charges.