2

3

4

5

6

7

8

SERIAL

DATA OUT

SERIAL

DATA IN

OUTPUT

ENABLE

LOGIC

SUPPLY

STROBE

LOGIC

GROUND

CLOCK

CLK

V

ST

OE

DD

1

SUB

POWER

GROUND

9

10

11

12

13

14

15

16

Dwg. PP-026A

BiMOS II 8-BIT SERIAL-INPUT,

LATCHED DRIVERS

Always order by complete part number, e.g., UCN5821A .

5822

Note the DIP package and the SOIC package are

electrically identical and share common terminal

number assignments.

A merged combination of bipolar and MOS technology gives

these devices an interface flexibility beyond the reach of standard

logic buffers and power driver arrays. The UCN5821A,

UCN5821LW, UCN5822A, and UCN5822LW each have an

eight-bit CMOS shift register and CMOS control circuitry, eight

CMOS data latches, and eight bipolar current-sinking Darlington

output drivers. The UCN5821A/LW and UCN5822A/LW are

identical except for rated output voltage.

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

original 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, the drivers can be cascaded for

interface applications requiring additional drive lines.

The UCN5821/22A are furnished in a standard 16-pin plastic

DIP; the UCN5821/22LW are in a 16-lead wide-body SOIC for

surface-mount applications. The UCN5821A is also available for

operation from -40

°C to +85°C. To order, change the prefix from

‘UCN’ to ‘UCQ’.

FEATURES

I To 3.3 MHz Data Input Rate

I CMOS, NMOS, TTL Compatible

I Internal Pull-Down Resistors

I Low-Power CMOS Logic & Latches

I High-Voltage Current-Sink Outputs

I Automotive Capable

ABSOLUTE MAXIMUM RATINGS

at 25

UCN5821A & UCN5821LW ..... 50 V

UCN5822A & UCN5822LW ..... 80 V

Input Voltage Range,

Continuous Output Current,

Package Code ‘A’ .................. 2.1 W

Package Code ‘LW’ ............... 1.5 W

Operating Temperature Range,

Storage Temperature Range,

Caution: CMOS devices have input static protection

but are susceptible to damage when exposed to

extremely high static electrical charges.

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