UCQ5812EPF データシートの表示（PDF） - Allegro MicroSystems

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UCQ5812EPF

20-BIT SERIAL-INPUT, LATCHED SOURCE DRIVERS WITH ACTIVE-DMOS PULL-DOWNS

Allegro MicroSystems 

5812-F

BiMOS II 20-BIT SERIAL-INPUT, LATCHED

SOURCE DRIVERS WITH ACTIVE-DMOS PULL-DOWNS

UCN5812EPF

The UCN5812AF/EPF combine a 20-bit CMOS shift register, data

latches, and control circuitry with high-voltage bipolar source drivers and

active DMOS pull-downs for reduced supply current requirements. Although

designed primarily for vacuum-fluorescent displays, the high-voltage, high-

OUT18 5

T 6

C 7

U 8

D Y 2 9

O L 1 10

R N 68 OUT12 11

25 OUT 2

24

23

22

21

20

19 OUT8

P E O — A Dwg.PP-059-1

ED NC nt ABSOLUTE MAXIMUM RATINGS

e at TA = 25°C

U E m Logic Supply Voltage, VDD ..................... 15 V

IN R e Driver Supply Voltage, VBB .................... 60 V

E c Continuous Output Current Range,

T F la IOUT ................................. -40 to +15 mA

Input Voltage Range,

N E p VIN ........................ -0.3 V to VDD + 0.3 V

O R re Package Power Dissipation, PD

(UCN5812AF) ........................... 3.12 W*

C R d (UCN5812EPF) ........................1.84 W†

e Operating Temperature Range,

IS O d TA .................................. -20°C to +85°C

Storage Temperature Range,

F n TS ................................ -55°C to +150°C

D e * Derate at rate of 22 mW/°C above TA = +25°C

— m † Derate at rate of 15 mW/°C above TA = +25°C

m Caution: Allegro CMOS devices have input static

o protection but are susceptible to damage when

exposed to extremely high static electrical

c charges.

Re Note that the UCN5812AF (dual in-line package)

current outputs also allow them to be used in other peripheral power driver

applications. They are improved versions of the original UCN5812A/EP.

The CMOS shift register and latches allow direct interfacing with

microprocessor-based systems. With a 5 V supply, they will operate to at

least 3.3 MHz. At 12 V, higher speeds are possible. Especially useful for

inter-digit blanking, the BLANKING input disables the output source drives

and turns on the DMOS sink drivers. Use with TTL may require the use of

appropriate pull-up resistors to ensure an input logic high.

A CMOS serial data output enables cascade connections in applications

requiring additional drive lines. Similar devices are available as the

UCN5810AF/LWF (10 bits), UCN5811A (12 bits), and UCN5818AF/EPF

(32 bits).

The output source drivers are high-voltage pnp-npn Darlingtons with a

minimum breakdown of 60 V and are capable of sourcing up to 40 mA. The

DMOS active pull-downs are capable of sinking up to 15 mA.

The UCN5812AF is supplied in a 28-pin dual in-line plastic package with

0.600" (15.24 mm) row spacing. For surface mounting, the UCN5812EPF is

furnished in 28-lead plastic chip carrier (quad pack) with 0.050"(1.22 mm)

centers. Copper lead-frames, reduced supply current requirements and lower

output saturation voltages, allow continuous operation, with all outputs

sourcing 25 mA, of the UCN5812AF over the operating temperature range,

and the UCN5812EPF up to +75°C. All devices are also available for opera-

tion between -40°C and +85°C. To order, change the prefix from ‘UCN’ to

‘UCQ’.

FEATURES

s High-Speed Source Drivers

s 60 V Source Outputs

s To 3.3 MHz Data Input Rate

s Low Output-Saturation Voltages

s Active DMOS Pull-Downs

s Reduced Supply Current

Requirements

s Improved Replacement

and UCN5812EPF (PLCC package) are electri-

s Low-Power CMOS Logic and Latches for TL5812

cally identical and share a common terminal

number assignment.

Always order by complete part number, e.g., UCN5812AF .

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