BiMOS II 32-BIT SERIAL-INPUT, LATCHED
SOURCE DRIVERS WITH ACTIVE-DMOS PULL-DOWNS
UCN5818EPF
30
32
31
OUT
OUT
OUT
OUT
OUT
OUT
NC
6
5
4
7
29
8
9
10
11
12
13
14
15
16
17
19
LATCHES
20
18
19
17
18
NC
OUT
OUT
3
REGISTER
BLNK
21
BLANKING
SERIAL
DATA OUT
2
22
GROUND
LOAD
1
BB
V
CLK
23
CLOCK
SUPPLY
ABSOLUTE MAXIMUM RATINGS
at TA = 25°C
Logic Supply Voltage, VDD.................... 15 V
Driver Supply Voltage, VBB................... 60 V
Continuous Output Current,
I
......................... -40 mA to +15 mA
OUT
Input Voltage Range,
VIN....................... -0.3 V to VDD + 0.3 V
Package Power Dissipation, P
(UCN5818AF) ............................ 3.5 W*
(UCN5818EPF) ......................... 2.7 W†
Operating Temperature Range,
T
................................. -20°C to +85°C
A
Storage Temperature Range,
TS............................... -55°C to +150°C
* Derate at rate of 28 mW/°C above TA = +25°C
† Derate at rate of 22 mW/°C above TA = +25°C
Caution: CMOS devices have input static
protection but are susceptible to damage when
exposed to extremely high static electrical
charges.
LOGIC
SUPPLY
44
DD
V
ST
24
STROBE
SERIAL
DATA IN
43
25
16
OUT
D
1
OUT
42
REGISTER
OUT
26
15
OUT
2
OUT
41
2
LATCHES
8
27
14
OUT
3
OUT
40
28
NC
39
38
37
36
35
34
33
19
32
31
30
29
Dwg. PP-059-2
OUT
OUT
NC
5818-F
Designed primarily for use with vacuum-fluorescent displays, the
UCN5818AF and UCN5818EPF smart power BiMOS II drivers combine
CMOS shift registers, data latches, and control circuitry, with bipolar highspeed sourcing outputs and DMOS active pull-down circuitry. The highspeed shift register and data latches allow direct interfacing with microprocessor LSI-based systems. A CMOS serial data output enables cascade connec-
4
tions in applications requiring additional drive lines. Both devices feature
60 V and -40 mA output ratings, allowing them to be used in many other
peripheral power driver applications.
These smart power drivers have been designed with BiMOS II logic for
improved data entry rates. With a 5 V supply, it will operate to at least 3.3
MHz. At 12 V, higher speeds are possible. Use of these devices with TTL
may require the use of appropriate pull-up resistors to ensure an input logic
high. All devices can be operated over the ambient temperature range of -
13
20°C to +85°C. The UCN5818AF is supplied in a 40-pin plastic dual in-line
package with 0.600" (15.24 mm) row spacing. A copper lead frame, reduced
supply current requirement, and low output saturation voltage permits
operation with minimum junction temperature rise. The ‘A’ package allows
all 32 outputs to be operated at -25 mA continuously over the operating
temperature range.
For high-density packaging applications, the UCN5818EPF is furnished
in a 44-lead plastic chip carrier (quad pack) for surface mounting on solder
lands with 0.050" (1.27 mm) centers. The PLCC allows -25 mA continuous
operation of all outputs simultaneously at ambient temperatures to 60°C.
Similar devices are available as the UCN5810AF/LWF (10 bits), UCN5811A
(12 bits), and UCN5812AF/EPF (20 bits).
FEATURES
■ 60 V Source Outputs
■ High-Speed Source Drivers
■ To 3.3 MHz Data Input Rate
■ Low-Output Saturation Voltages
■ Active DMOS Pull-Downs
Always order by complete part number, e.g., UCN5818EPF .
■ Low-Power CMOS Logic
and Latches
■ Reduced Supply Current
Requirements
■ Improved Replacements for
SN75518N/FN
Data Sheet
26182.28C
5818-F
32-BIT SERIAL-INPUT,
LATCHED SOURCE DRIVERS
WITH ACTIVE-DMOS PULL-DOWNS
UCN5818AF
FUNCTIONAL BLOCK DIAGRAM
LOAD
SUPPLY
SERIAL
DATA OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
BLANKING
GROUND
LOGIC
1
V
BB
2
338
32
4
31
5
30
6
29
7
28
8
27
9
26
10
25
LATCHES
REGISTER
11
24
12
23
13
22
14
21
15
20
16
19
17
18
18
17
19
BLNK
20
REGISTER
V
LATCHES
CLK
40
DD
SUPPLY
SERIAL
39
DATA IN
OUT
1
OUT
37
2
36
OUT
3
35
OUT
4
34
OUT
5
33
OUT
6
32
OUT
7
31
OUT
8
30
OUT
9
OUT
29
10
OUT
28
11
OUT
27
12
OUT
26
13
25
OUT
14
24
OUT
15
23
OUT
16
22
STROBE
ST
CLOCK
21
CLOCK
SERIAL
DATA IN
STROBE
BLANKING
GROUND
SERIAL-PARALLEL SHIFT REGISTER
LATCHES
OUT1OUT
OUT
2
3
TYPICAL INPUT CIRCUIT
V
DD
IN
OUT
V
LOGIC
DD
SUPPLY
SERIAL
DATA OUT
MOS
BIPOLAR
V
BB
N
LOAD
SUPPLY
Dwg. FP-013-1
Dwg. PP-029-4
3.0
2.5
SUFFIX 'A', R = 36°C/W
θJA
2.0
1.5
SUFFIX 'EP', R = 46°C/W
θJA
1.0
0.5
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
0
25
50 75 100 125 150
AMBIENT TEMPERATURE IN °C
Dwg. GP-025A
Dwg. GP-025A
Dwg. EP-010-5
TYPICAL OUTPUT DRIVER
V
BB
OUT
N
Dwg. No. A-14,219
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1988, 2000 Allegro MicroSystems, Inc.
5818-F
32-BIT SERIAL-INPUT,
LATCHED SOURCE DRIVERS
WITH ACTIVE-DMOS PULL-DOWNS
ELECTRICAL CHARACTERISTICS at TA = + 25°C, VBB = 60 V unless otherwise noted.
Limits @ VDD = 5 V Limits @ VDD = 12 V
Characteristic Symbol Test Conditions Mln. Typ. Max. Min. Typ. Max. Units
V
Output Leakage Current I
Output Voltage V
Output Pull-Down Current I
Input Voltage V
Input Current I
Serial Data Output Voltage V
Maximum Clock Frequency f
Supply Current I
Blanking to Output Delay t
Output Fall Time t
Output Rise Time t
CEX
OUT(1)IOUT
V
OUT(0)IOUT
OUT(0)
IN(1)
V
IN(0)
IN(1)
I
IN(0)
OUT(1)IOUT
V
OUT(0)IOUT
clk
DD(1)
I
DD(0)
I
BB(1)
I
BB(0)
PHL
t
PLH
f
r
= 0 V, TA = +70°C — -5.0 -15 — -5.0 -15 µA
OUT
= -25 mA 58 58.5 — 58 58.5 — V
= 1 mA — 2.0 3.0 ——— V
= 2 mA ——— —2.0 3.5 V
I
OUT
V
V
OUT
OUT
= 5 V to V
= 20 V to V
BB
BB
2.0 3.5 — ——— mA
——— 8.0 13 — mA
3.5 — 5.3 10.5 — 12.3 V
-0.3 — +0.8 -0.3 — +0.8 V
VIN = V
DD
— 0.05 0.5 — 0.1 1.0 µA
VIN = 0.8 V — -0.05 -0.5 — -0.1 -1.0 µA
= -200 µA 4.5 4.7 — 11.7 11.8 — V
= 200 µA — 200 250 — 100 200 mV
3.3* —— ——— MHz
All Outputs High — 100 300 — 200 500 µA
All Outputs Low — 100 300 — 200 500 µA
Outputs High, No Load — 3.0 6.0 — 3.0 6.0 mA
Outputs Low — 10 100 — 10 100 µA
CL = 30 pF, 50% to 50% — 2000 ——1000 — ns
CL = 30 pF, 50% to 50% — 1000 ——850 — ns
CL = 30 pF, 90% to 10% — 1450 ——650 — ns
CL = 30 pF, 10% to 90% — 650 ——700 — ns
Negative current is defined as coming out of (sourcing) the specified device terminal.
* Operation at a clock frequency greater than the specified minimum value is possible but not warranteed.
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