Allegro UCN5895SLW, UCN5895EP, UCN5895A Datasheet

5895

8-BIT SERIAL-INPUT,
LATCHED DRIVERS

BiMOS II 8-BIT SERIAL INPUT,

LATCHED SOURCE DRIVERS

The UCN5895A, UCN5895EP, and A5895SLW BiMOS II serial­input, latched source drivers are designed for applications emphasiz­ing low output saturation voltages and currents to -250 mA per output.
These smart high-side octal, driver ICs merge an 8-bit CMOS shift
register, associated CMOS latches, and CMOS control logic (strobe
and output enable) with medium current emitter-follower (sourcing)
outputs. Typical applications include incandescent or LED displays
(both directly driven and multiplexed), non-impact (i.e., thermal)
printers, relays, and solenoids.

Each device is suitable for high-side applications to -250 mA per
channel. The maximum supply voltage is 50 V and a minimum output
sustaining voltage rating of 35 V for inductive load applications. Under
normal operating conditions, the UCN5895A and UCN5895EP are
capable of providing -120 mA (8 outputs continuous and simultaneous)
at +65°C with a logic supply of 5 V. Similar devices, with higher output
current ratings, are the UCN5890A and UCN5891A.

BiMOS II devices can operate at greatly improved data-input rates.
With a 5 V supply, they will typically operate at better than 5 MHz.
At 12 V, significantly higher speeds are obtained.

The CMOS inputs provide for minimum loading and are compatible
with standard CMOS, PMOS, and NMOS circuits. TTL or DTL circuits
may require the use of appropriate pull-up resistors to ensure a proper
input-logic high. A CMOS serial data output allows cascading these
devices in multiple drive-line applications required by many dot matrix,
alphanumeric, and bar graph displays.

These devices are rated for continuous operation over the tem­perature range of -20°C to +85°C. Because of limitations on package
power dissipation, the simultaneous operation of all output drivers may
require a reduction in duty cycle. The UCN5895A is supplied in a
standard 16-pin dual in-line plastic package with a copper lead frame
for increased allowable package power dissipation. The UCN5895EP
is supplied in a 20-lead plastic leaded chip carrier for minimum area,
surface-mount applications. The A5895SLW is supplied in a 16-lead
wide-body plastic SOIC.

FEATURES

■ Low Output-Saturation Voltage

■ Source Outputs to 50 V

■ Output Current to -250 mA

■ To 3.3 MHz Data-lnput Rate

■ Low-Power CMOS Logic & Latches

Always order by complete part number, e.g., UCN5895A .

UCN5895A

Data Sheet

26182.14B*

Note the UCN5895A (DIP) and the A5895SLW
(SOIC) are electrically identical and share a common
terminal number assignment.

ABSOLUTE MAXIMUM RATINGS

at T

A

= +25°C

Output Voltage, V

OUT

. . . . . . . . . . . . . . 50 V

Logic Supply Voltage Range,

V

DD

. . . . . . . . . . . . . . . . . . 4.5 V to 12 V

Driver Supply Voltage Range,

V

BB

. . . . . . . . . . . . . . . . . . 5.0 V to 50 V

Input Voltage Range,

V

IN

. . . . . . . . . . . -0.3 V to VDD + 0.3 V

Continuous Output Current,

I

OUT

. . . . . . . . . . . . . . . . . . . . . -250 mA

Allowable Package Power Dissipation,

P

D

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

Operating Temperature Range,

T

A

. . . . . . . . . . . . . . . . . -20°C to +85°C

Storage Temperature Range,

T

S

. . . . . . . . . . . . . . . . -55°C to +150°C

Caution: CMOS devices have input-static
protection, but are susceptible to damage when
exposed to extremely high static electrical
charges.

5895

2

3

4

5

6

7

8

SERIAL
DATA OUT

SERIAL

DATA IN

OUTPUT

ENABLE

LOGIC
SUPPLY

STROBE

CLOCK CLK

V

DD

ST

OE

1GROUND

9

10

11

12

13

14

15

16

OUT

1

OUT

2

OUT

3

Dwg. PP-026-2A

OUT

5

OUT

6

OUT

7

OUT

8

OUT

4

SHIFT

REGISTER

LATCHES

V

BB

LOAD
SUPPLY

5895

8-BIT SERIAL-INPUT,
LATCHED DRIVERS

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

8-BIT SERIAL-PARALLEL SHIFT REGISTER

GROUND

STROBE

SERIAL
DATA IN

CLOCK

LATCHES

MOS

BIPOLAR

V

BB

SERIAL
DATA OUT

V

DD

OUTPUT
ENABLE

OUT1OUT2OUT3OUT4OUT5OUT6OUT7OUT

8

TYPICAL INPUT CIRCUIT

FUNCTIONAL BLOCK DIAGRAM

Dwg. No. A-12,654

Dwg. No. A-12,655

Dwg. EP-010-4A

IN

V

DD

Dwg. No. A-14,368

UCN5895EP

Copyright © 1985, 1999, Allegro MicroSystems, Inc.

50 75 100 125 150

2.5

0.5

0

ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS

AMBIENT TEMPERATURE IN °C

2.0

1.5

1.0

25

SUFFIX 'A', R = 60°C/W

θJA

SUFFIX 'EP', R = 59°C/W

θJA

Dwg. GP-024-4

SUFFIX 'LW', R = 80°C/W

θJA

TYPICAL OUTPUT DRIVER

5895

8-BIT SERIAL-INPUT,
LATCHED DRIVERS

ELECTRICAL CHARACTERISTICS at T

A

= +25°C, V

BB

= 50 V, VDD = 5 V and 12 V

(unless otherwise noted).

Limits

Characteristic Symbol Test Conditions Min. Max. Units

Output Leakage Current I

OUT

TA = +25°C — -50 µA
T

A

= +70°C — -100 µA

Output Saturation Voltage V

CE(SAT)

I

OUT

= -60 mA — 1.1 V

I

OUT

= -120 mA — 1.2 V

Output Sustaining Voltage V

CE(sus)

I

OUT

= -120 mA, L = 2 mH 35 — V

Input Voltage V

IN(1)

V

DD

= 5.0 V 3.5 5.3 V

V

DD

= 12 V 10.5 12.3 V

V

IN(0)

V

DD

= 5 V to 12 V -0.3 +0.8 V

Input Current I

IN(1)

V

DD

= VIN = 5.0 V — 50 µA

V

DD

= VIN = 12 V — 240 µA

Input lmpedance z

IN

V

DD

= 5.0 V 100 — kΩ

V

DD

= 12 V 50 — kΩ

Max. Clock Frequency f

CLK

3.3 — MHz

Serial Data-Output r

OUT

V

DD

= 5.0 V — 20 kΩ

V

DD

= 12 V — 6.0 kΩ

Turn-ON Delay t

PLH

Output Enable to Output, I

OUT

= -120 mA — 2.0 µs

Turn-OFF Delay t

PHL

Output Enable to Output, I

OUT

= -120 mA — 10 µs

Supply Current I

BB

All outputs ON, All outputs open — 10 mA
All outputs OFF — 200 µA

I

DD

VDD = 5 V, All outputs OFF, Inputs = 0 V — 100 µA
V

DD

= 12 V, All outputs OFF, Inputs = 0 V — 200 µA

V

DD

= 5 V, One output ON, All inputs = 0 V — 1.0 mA

V

DD

= 12 V, One output ON, All inputs = 0 V — 3.0 mA

Diode Leakage Current I

R

VR = 25 V, TA = +25°C—50µA
V

R

= 25 V, TA = +70°C — 100 µA

Diode Forward Voltage V

F

IF = 120 mA — 2.0 V

Resistance