Darlington current-sink outputs, with improved low-saturation
voltages
▪
CMOS, TTL compatible inputs
▪
Output transient protection
▪
Internal pull-down resistors
▪
Low-power CMOS latches
Description
The A6800 and A6801 latched-input BiMOS ICs merge
high-current, high-voltage outputs with CMOS logic. The
CMOS input section consists of 4 or 8 data (D type) latches
with associated common CLEAR, STROBE, and OUTPUT
ENABLE circuitry. The power outputs are bipolar NPN
Darlingtons. This merged technology provides versatile,
fl
exible interface. These BiMOS power interface ICs greatly
benefit the simplification of computer or microproces-
sor I/O. The A6800 ICs each contain four latched drivers.
A6801 ICs contain eight latched drivers.
The CMOS inputs are compatible with standard CMOS
circuits. TTL circuits may mandate the addition of input
pull-up resistors. The bipolar Darlington outputs are suitable
for directly driving many peripheral/power loads: relays,
lamps, solenoids, small DC motors, and so forth.
All devices have open-collector outputs and integral diodes
for inductive load transient suppression. The output transis-
tors are capable of sinking 600 mA and can withstand at
least 50 V in the off state. Because of limitations on package
power dissipation, the simultaneous operation of all driv-
ers at maximum rated current can only be accomplished
by a reduction in duty cycle. Outputs may be paralleled for
higher load current capability.
Continued on the next page…
Packages
A6800
14-pin 7.62 mm DIP
(A package)
A6800
14-pin SOICN
(L package)
A6801
28-pin PLCC
(EP package)
A6801
24-pin SOICW
(LW package)
Approximate scale 1:1
Functional Block Diagram
S UP P LY
V
DD
IN
N
OUT
N
C OMMON
S T R OB E
G R OUND
C LE AR
OUT P UT E NAB LE
T Y P IC AL MOS LAT C H
T Y P IC AL B IP OLAR DR IV E
C OMMON MOS C ONT R OL
26180.110H
A6800
and
A6801
DABiC-5 Latched Sink Drivers
Description (continued)
The A6800SA is furnished in a 14-pin DIP with 7.62 mm
(0.300 in.) row centers, the A6800SL and A6801SLW in surface-
mountable SOICs; and the A6801SEP in a 28-lead PLCC. These
devices are lead (Pb) free, with 100% matte tin plated leadframes.
Applications include:
▪
Relays
▪
Lamps
▪
Solenoids
▪
Small DC motors
Selection Guide
Part Number
A6800SA-T*
A6800SLTR-T
A6801SEPTR-T
A6801SLWTR-T
Package
14-pin DIP
14-pin SOIC
28-pin PLCC
24-pin SOIC
Packing
25 per tube
2500 per reel
800 per reel
1000 per reel
*Variant is in production but has been determined to be NOT FOR NEW DESIGN. This classification indicates that
sale of the variant is currently restricted to existing customer applications. The variant should not be purchased for
new design applications because obsolescence in the near future is probable. Samples are no longer available.
Status change: May 4, 2009.
Absolute Maximum Ratings*
Characteristic
Output Voltage
Supply Voltage
Input Voltage Range
Continuous Collector Current
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Symbol
V
CE
V
DD
V
IN
I
C
T
A
T
J
(max)
T
stg
Range S
Notes
Rating
50
7
–0.3 to V
DD
+ 0.3
600
–20 to 85
150
–55 to 150
Units
V
V
V
mA
ºC
ºC
ºC
*Caution: CMOS devices have input-static protection, but are susceptible to damage when exposed to
extremely high static-electrical charges.
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2
A6800
and
A6801
DABiC-5 Latched Sink Drivers
Allowable Power Dissipation
2.5
28-LEAD PLCC, R
14-PIN DIP, R
JA
JA
= 68 C/W
= 73 C/W
2.0
PACKAGE POWER DISSIPATION (W)
1.5
24-LEAD SOIC, R
JA
= 85 C/W
1.0
0.5
14-LEAD SOIC, R
JA
= 120 C/W
0
25
50
75
100
125
150
AMBIENT TEMPERATURE (ºC)
Typical Input Circuit
V
DD
IN
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
3
A6800
and
A6801
DABiC-5 Latched Sink Drivers
ELECTRICAL CHARACTERISTICS
1
Unless otherwise noted: T
A
= 25°C, logic supply operating voltage V
DD
= 3.0 to 5.5 V
V
DD
= 3.3 V
Characteristic
Output Leakage Current
Output Sustaining Voltage
Collector-Emitter Saturation
Voltage
Input Voltage
Input Resistance
Logic Supply Current
Clamp Diode Leakage Current
Clamp Diode Forward Voltage
Output Fall Time
Output Rise Time
1
2
V
DD
= 5 V
Typ.
–
–
0.8
0.9
1.0
–
–
–
–
130
–
–
80
100
Symbol
I
CEX
V
CE(SUS)
V
CE(SAT)
V
IN(1)
V
IN(0)
R
IN
I
DD(1)
I
DD(0)
I
r
V
f
t
f
t
r
Test Conditions
V
OUT
= 50 V
I
OUT
= 350 mA, L = 3 mH
I
OUT
= 100 mA
I
OUT
= 200 mA
I
OUT
= 350 mA (See note 2)
Min.
–
35
–
–
–
2.2
–
50
Typ.
–
–
0.8
0.9
1.0
–
–
–
–
130
–
–
80
100
Max. Min.
10
–
1.0
1.1
1.3
–
1.1
–
1.0
150
50
2.0
–
–
–
35
–
–
–
3.3
–
50
–
–
–
–
–
–
Max.
10
–
1.0
1.1
1.3
–
1.7
–
1.0
150
50
2.0
–
–
Units
μA
V
V
V
V
V
V
kΩ
mA
μA
μA
V
ns
ns
One output on, I
OUT
= 100 mA
All outputs off
V
r
= 50 V
I
f
= 350 mA
V
CC
= 50 V, R1 = 500
Ω,
C1
≤
30 pF
V
CC
= 50 V, R1 = 500
Ω,
C1
≤
30 pF
–
–
–
–
–
–
Operation of these devices with standard TTL or DTL may require the use of appropriate pull-up resistors to ensure a minimum logic 1.
Because of limitations on package power dissipation, the simultaneous operation of multiple drivers can only be accomplished by reduction in duty cycle.
Truth Table
OUT P UT
IN
N
0
1
X
X
X
X
S T R OB E
1
1
X
X
0
0
CLE AR
0
0
1
X
0
0
E NA B L E
0
0
X
1
0
0
t-1
X
X
X
X
ON
OF F
OUT
N
t
OF F
ON
OF F
OF F
ON
OF F
X = irrelevant
t-1 = previous output s tate
t = pres ent output s tate
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
4
A6800
and
A6801
DABiC-5 Latched Sink Drivers
Timing Requirements and Specifications
(Logic Levels are V
DD
and Ground)
CLEAR
G
STROBE
A
C
B
C
B
A
C
B
H
INN
D
OUTN
E
F
E
H
HIGH = ALL OUTPUTS DISABLED (OFF)
OUTPUT ENABLE
50%
t
en(BQ)
t
r
t
dis(BQ)
OUT
N
10%
t
f
DATA
90%
50%
Key
A
B
C
D
E
F
G
H
t
dis(BQ)
t
en(BQ)
Description
Minimum data active time before Strobe enabled (Data Set-Up Time)
Minimum data active time after Strobe disabled (Data Hold Time)
Minimum Strobe pulse width
Maximum time between Strobe activation and transition from output on to output off*
Maximum time between Strobe activation and transition from output off to output on*
Maximum time between Clear activation and transition from output on to output off*
Minimum Clear pulse width
Minimum data pulse width
Output Enable to output off delay*
Output Enable to output on delay*
Time (ns)
25
25
50
500
500
500
50
100
500
500
*Conditions for output transition testing are: V
CC
= 50 V, V
DD
= 5 V, R1 = 500
Ω,
C1
≤
30 pF.
NOTE: Information present at an input is transferred
to its latch when the STROBE is high. A high CLEAR
input will set all latches to the output off condition
regardless of the data or STROBE input levels. A high
OUTPUT ENABLE will set all outputs to the off con-
tdition, regardless of any other input conditions. When
Help: Test the solenoid valve. The specific situation is as follows: use a 15.5v starting voltage to power on, so that the solenoid valve closes for 1s, then the voltage drops to a 5v stable voltage, ...
[i=s]This post was last edited by Texas Instruments_Video on 2015-3-10 16:45[/i] [media=swf,500,375]http://player.youku.com/player.php/sid/XOTA4OTMyNjI4/v.swf[/media] Engineers comprehensively demonst...
A resistor has a single Ku marked next to it.It comes from Figure 19 in this document [url=http://www.ti.com.cn/cn/lit/ds/symlink/ucc28610.pdf]http://www.ti.com.cn/cn/lit/ds/symlink/ucc28610.pdf[/url]...
I think the forum can add two modules, C language and C++. After all, people who work with microcontrollers and embedded systems have to deal with them every day. We can discuss with each other, impro...
I want to use the two-corner bidirectional light-emitting tubes and ordinary light-emitting diodes to light up alternately, turning on green light, bidirectional blue light, and bidirectional red ligh...
Tesla and BYD, vying for dominance in the global electric vehicle market, are reportedly considering adopting Samsung's AMOLED (active-matrix organic light-emitting diode) technology for their next...[Details]
introduction
With the development of digital and network technologies, broadcasting technology has become increasingly diversified, with the most significant trend being the transition from an...[Details]
ISP devices, such as field programmable devices (FPGAs and CPLDs), do not require a programmer. Using programming kits provided by the device manufacturer, they employ a top-down modular design app...[Details]
In recent years, with the application of the IEC61850 standard and the development and deployment of optoelectronic transformers, the concept of digital substations has been put into practical use ...[Details]
Since the beginning of this year, price wars have intensified, new models have been launched one after another, used cars with zero kilometers have become a hot topic, and the industry's internal c...[Details]
While the current industry consensus is that autonomous vehicles are robots and that their systems are managed using robotics-developed thinking, there are also cases where autonomous driving is ac...[Details]
Electric vehicles are becoming increasingly popular, with increasingly longer ranges. There are two ways to charge electric vehicles: slow charging and fast charging. Which is the most suitable? Sl...[Details]
Through AI connection technology supported by Qualcomm X85 5G modem and RF and Qualcomm FastConnect 7900 mobile connection system, seamless switching can be achieved between cellular net...[Details]
Coal mines typically contain gas and coal dust. When gas and coal dust reach a certain concentration, they can cause explosions. Electrical equipment generates arcs during normal operation or durin...[Details]
On August 22, the Wall Street Journal reported on the 21st local time that the new US government does not plan to acquire equity in semiconductor wafer foundry giant TSMC and Micron, one of the thr...[Details]
Bosch has released a new SoC series to support L2+ advanced driver assistance functions. The chip integrates high resolution and long-range detection capabilities, and has built-in support for neur...[Details]
With the support and encouragement of national policies, some Internet car manufacturers have also joined the new energy vehicle manufacturing industry. From the perspective of new car manufacturer...[Details]
Consumer demand for premium listening experiences has driven rapid evolution in the wireless headphone market in recent years. Hybrid designs, which utilize two drivers per earbud to enhance sound ...[Details]
The Waveshare ESP32-P4-ETH is a compact ESP32-P4 development board with Ethernet and PoE support. It looks very similar to the Olimex ESP32-P4-DevKit, minus the pUEXT connector. However, we've also...[Details]
introduction
In recent years, with the increasing number of high-rise buildings, the demand for elevators has also increased. Currently, the elevators we use most often use LED dot array displ...[Details]
MCU
京公网安备 11010802033920号
EEWORLD
