H
CMOS 5 x 7 Small Alphanumeric
Displays
Technical Data
HCMS-270X Series
HCMS-271X Series
HCMS-272X Series
Features
• On-Board Low Power CMOS
ICs
Integrated Shift Registers with
Constant Current LED Drivers
•
Wide Operating
Temperature Range
-40°C to +85°C
•
Three Package Styles
1 Row of 4 Characters
1 Row of 8 Characters
2 Rows of 8 Characters
•
Five LED Colors
Standard Red
High Efficiency Red
Orange
Yellow
High Performance Green
• 5 x 7 LED Matrix
Displays Full ASCII
Character Set
•
Character Height
3.8 mm (0.15 inch)
•
Long Viewing Distance
2.6 Metres (8.6 Feet)
•
Wide Viewing Angle
X Axis =
±
30°
Y Axis =
±
55°
•
Categorized for Luminous
Intensity
• Categorized for Color
HCMS-2701/-2703
HCMS-2711/-2713
HCMS-2721/-2723
Typical Applications
•
Telecommunications
Equipment
•
Instrumentation
•
Medical Instruments
•
Business Machines
Device Selection Guide
Part Number
HCMS-2700
-2701
-2702
-2703
-2704
HCMS-2710
-2711
-2712
-2713
-2714
HCMS-2720
-2721
-2722
-2723
-2724
Display Package Style
1 Row of 4 Characters
LED Color
Standard Red
Yellow
HER
Green
Orange
Standard Red
Yellow
HER
Green
Orange
Standard Red
Yellow
HER
Green
Orange
1 Row of 8 Characters
2 Rows of 8 Characters
3-100
5964-6375E
Description
The HCMS-270X series are four
character 5x7 dot matrix alpha-
numeric displays in a dual in-line
12 pin plastic package. The on-
board CMOS ICs form a 28 bit
shift register.
The HCMS-271X series are eight
character 5x7 dot matrix alpha-
numeric displays in a dual in-line
plastic package with 26 pin
positions. The on-board CMOS
ICs form a 56 bit shift register.
The HCMS-272X series are
sixteen character 5x7 dot matrix
alphanumeric displays. Each
device is assembled by enclosing
two HCMS-271X devices in a
common lens assembly forming
two rows of eight characters. The
plastic package has two dual in-
line rows of 26 pin positions for a
total of 52 pin positions. The two
on-board CMOS IC 56 bit shift
registers for each row are
electrically separate from each
other.
The on-board CMOS ICs form
serial input shift registers with
constant current output LED row
drivers. Decoded column data is
clocked into the shift registers for
each refresh cycle. Full character
display is accomplished with
external column strobing at a
refresh rate of 100 Hz or faster.
All of these display devices may
be end stacked in the X-direction
to form a string of characters of
desired length.
Package Dimensions
17.73
MAX.
(0.698)
4.44
(0.175)
SEE
NOTE 3
SEE NOTE 3
3.71 REF.
(0.146)
1
2
3
4
10.16 MAX.
(0.400)
PIN
1
2
3
4
5
6
FUNCTION
COLUMN 1
COLUMN 2
COLUMN 3
COLUMN 4
COLUMN 5
INT. CONNECT*
PIN
7
8
9
10
11
12
FUNCTION
DATA OUT
V
B
V
DD
CLOCK
GROUND
DATA IN
* DO NOT CONNECT OR USE.
PIN 1 IDENTIFIER
DATE CODE
PART
NUMBER
HCMS-270X
5.08
(0.200)
5.38
(0.212)
YYWW
2.11
REF.
(0.083)
LUMINOUS INTENSITY CATEGORY
COLOR BIN
X Z
0.51
(0.020)
0.25
(0.010)
2.54
(0.100)
0.51 DIA.
(0.020)
2.54
±
0.13
(0.100
±
0.005)
TYP. NON ACCUM.
1.27
(0.050)
7.62
(0.300)
NOTES:
1. DIMENSIONS IN MILLIMETRES/INCHES.
2. UNLESS OTHERWISE SPECIFIED THE TOLERANCE
ON ALL DIMENSIONS IS 0.38MM (0.015").
3. CHARACTERS ARE CENTERED WITH RESPECT TO
LEAD WITHIN 0.13MM (0.005").
4. LEAD MATERIAL: SOLDER PLATED COPPER ALLOY.
HCMS-270X
3-101
35.56
MAX.
(1.400)
4.44
(0.175)
SEE NOTE 3
SEE NOTE 3
3.71
REF.
(0.146)
1
2
3
4
5
6
7
8
10.16
MAX.
(0.400)
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
FUNCTION
NO PIN
COLUMN 2
NO PIN
COLUMN 4
NO PIN
INT. CONNECT*
NO PIN
COLUMN 1
NO PIN
COLUMN 3
NO PIN
COLUMN 5
INT. CONNECT*
PIN
14
15
16
17
18
19
20
21
22
23
24
25
26
FUNCTION
DATA OUT
V
B (5-8)
NO PIN
CLOCK
GROUND
NO PIN
NO PIN
INT. CONNECT*
V
B (1-4)
V
DD
NO PIN
GROUND
DATA IN
PIN 1 IDENTIFIER
DATE
CODE
PART NUMBER
HCMS-271X
YYWW
X
Z
2.11 REF.
(0.083)
LUMINOUS INTENSITY CATEGORY
COLOR BIN
0.51
(0.020)
0.25
(0.010)
* DO NOT CONNECT OR USE.
5.08
(0.200)
5.38
(0.212)
0.51
DIA.
(0.020)
2.54
±
0.13
(0.100
±
0.005)
TYP. NON ACCUM.
7.62
(0.300)
1.27
(0.050)
2.54
(0.100)
NOTES:
1. DIMENSIONS IN MILLIMETRES/INCHES.
2. UNLESS OTHERWISE SPECIFIED THE TOLERANCE
ON ALL DIMENSIONS IS 0.38MM (0.015").
3. CHARACTERS ARE CENTERED WITH RESPECT TO
LEAD WITHIN 0.13MM (0.005").
4. LEAD MATERIAL: SOLDER PLATED COPPER ALLOY.
HCMS-271X
35.56
MAX.
(1.400)
SEE NOTE 3
3.72
REF.
(0.146)
ROW B
1
2
3
4
5
6
7
8
SEE NOTE 3
19.81
MAX.
(0.780)
9.65
(0.380)
4.82
(0.190)
9
ROW A
10
11
12
13
14
15
16
4.44
(0.175)
PIN 1A IDENTIFIER
DATE
CODE
PART NUMBER
0.51
(0.020)
HCMS-272X
YYWW
X
Z
2.11
REF.
(0.083)
PIN
1A
2A
3A
4A
5A
6A
7A
8A
9A
10A
11A
12A
13A
14A
15A
16A
17A
18A
19A
20A
21A
22A
23A
24A
25A
26A
FUNCTION
NO PIN
COLUMN 2
NO PIN
COLUMN 4
NO PIN
INT. CONNECT*
NO PIN
COLUMN 1
NO PIN
COLUMN 3
NO PIN
COLUMN 5
INT. CONNECT*
DATA OUT
V
B (13-16)
NO PIN
CLOCK
GROUND
NO PIN
NO PIN
INT. CONNECT*
V
B (9-12)
V
DD
NO PIN
GROUND
DATA IN
PIN
1B
2B
3B
4B
5B
6B
7B
8B
9B
10B
11B
12B
13B
14B
15B
16B
17B
18B
19B
20B
21B
22B
23B
24B
25B
26B
FUNCTION
NO PIN
COLUMN 2
NO PIN
COLUMN 4
NO PIN
INT. CONNECT*
NO PIN
COLUMN 1
NO PIN
COLUMN 3
NO PIN
COLUMN 5
INT. CONNECT*
DATA OUT
V
B (5-8)
NO PIN
CLOCK
GROUND
NO PIN
NO PIN
INT. CONNECT*
V
B (1-4)
V
DD
NO PIN
GROUND
DATA IN
* DO NOT CONNECT OR USE INTERNAL
CONNECTION PINS.
LUMINOUS INTENSITY CATEGORY
COLOR BIN
0.25
(0.010)
5.08
(0.200)
1.27
(0.050)
5.38
(0.212)
0.51
DIA.
(0.020)
NOTES:
1. DIMENSIONS ARE IN MILLIMETRES/INCHES.
2. UNLESS OTHERWISE SPECIFIED,
TOLERANCE IS
±
0.38MM (0.015").
3. CHARACTERS ARE POSITIONED WITH
RESPECT TO LEADS WITHIN
±
0.13MM (0.005").
4. LEAD MATERIAL IS SOLDER PLATED COPPER ALLOY.
5.08
±
0.127
(0.200
±
.005)
2.54
±
0.13
(0.100
±
0.005)
TYP. NON ACCUM.
2.54
(0.100)
PIN
13A
PIN
14A
PIN
13B
2.03
(0.080)
7.62
(0.300)
PIN
14B
HCMS-272X
3-102
Absolute Maximum Ratings
Supply Voltage V
DD
to Ground ........................................ -0.3 V to 7.0 V
Data Input, Clock, Data Output, V
B
................................... -0.3 V to V
DD
Column Input Voltage, V
COL
.............................................. -0.3 V to V
DD
Free Air Operating Temperature, T
A
.............................. -40°C to +85°C
Storage Temperature, T
S
............................................. -55°C to +100°C
Maximum Allowable Package Power Dissipation, P
D
at 55°C
[1,2]
HCMS-270X ............................................................................ 0.837 W
HCMS-271X ............................................................................ 1.674 W
HCMS-272X (per 8 character row) ........................................ 1.674 W
(total per package ........................................... 3.348 W)
Maximum Solder Temperature
1.59 mm (0.063") Below Seating Plane, t < 5 sec ..................... 260°C
ESD Protection @ 1.5 kΩ, 100 pF ........................ V
Z
= 4 kV (each pin)
Notes:
1. Maximum allowable power dissipation is derived from V
DD
= 5.25 V and V
B
= 2.4 V,
V
COL
= 3.5 V, 20 LEDs illuminated per character, 20% on-time duty factor.
2. See Figure 1 for power derating. Thermal resistance from device V
DD
pin(s) to
ambient through the PC board mounting assembly is assumed to be Rθ
PC-A
≤
35°C/W
per device for the HSMS-270X,
≤
17.5°C/W per device for the HCMS-271X, and
≤
17.5°C/W per row for the HCMS-272X.
Recommended Operating Conditions, T
A
= -40
°
C to +85
°
C
Description
Supply Voltage
Data Out Current, Low State
Data Out Current, High State
Column Input Voltage
Setup Time
Hold Time
Clock Pulse Width High
Clock Pulse Width Low
Clock High to Low Transition
Clock Frequency
Symbol
V
DD
I
OL
I
OH
V
COL
t
SETUP
t
HOLD
t
WH(CLOCK)
t
WL(CLOCK)
t
THL
f
CLOCK
Minimum
4.75
Nominal
5.0
Maximum
5.25
1.6
-0.5
3.5
Unit
V
mA
mA
V
ns
ns
ns
ns
ns
MHZ
2.75
10
25
50
50
3.0
200
5
Electrical Characteristics, -40
°
C to +85
°
C
Parameter
Supply Current, Dynamic
[2]
HCMS-270X
HCMS-271X
HCMS-272X (per row)
Supply Current, Static
[3]
HCMS-270X
HCMS-271X
HCMS-272X (per row)
HCMS-270X
HCMS-271X
HCMS-272X (per row)
Symbol
I
DDD
Test Conditions
V
DD
= 5.25 V
f
CLOCK
= 5 MHz
V
B
= 0.4 V
Min.
Typ.
[1]
6.2
12.4
15.6
1.8
3.6
3.6
2.2
4.4
4.4
Max.
7.8
15.6
15.6
2.6
5.2
5.2
6.0
12.0
12.0
Unit
mA
I
DDSoff
V
DD
= 5.25 V
V
B
= 0.4 V
V
DD
= 5.25 V
V
B
= 2.4 V
mA
I
DDSon
3-103
Electrical Characteristics, -40
°
C to +85
°
C (cont'd.)
Parameter
Column Input Current
HCMS-270X
HCMS-271X
HCMS-272X (per row)
Input Logic High:
Data, V
B
, Clock
Input Logic Low:
Data, V
B
, Clock
Input Current:
Data
Clock
HCMS-270X
HCMS-271X
HCMS-272X (per row)
V
B
HCMS-270X
HCMS-271X
HCMS-272X (per row)
Data Out Voltage
Symbol
I
COL
Test Conditions
V
DD
= 5.25
V
COL
= 3.5 V
V
B
= 2.4 V
Min.
Typ.
[1]
335
670
670
2.0
0.8
-10
-10
-20
-20
-40
-80
-80
2.4
+1
Max.
410
820
820
V
V
µA
Unit
mA
V
IH
V
IL
V
DD
= 4.75 V
V
DD
= 5.25 V
V
DD
= 5.25 V
0 < V
I
< 5.25 V
I
I
V
DD
= 5.25 V
0 < V
I
< 5.25 V
+1
V
OH
V
OL
Power Dissipation
[4]
Per Package
HCMS-270X
HCMS-271X
HCMS-272X (per row)
Thermal Resistance
[5]
IC Junction-to-Pin (V
DD
)
HCMS-270X
HCMS-271X
HCMS-272X (per row)
P
D
V
DD
= 5.25 V
0 < V
B
< 5.25 V
V
DD
= 4.75 V
I
OH
= -0.5 mA
I
COL
= 0 mA
V
DD
= 5.25 V
I
OH
= 1.6 mA
I
COL
= 0 mA
V
DD
= 5.0 V
V
COL
= 3.5 V
17.5% DF
V
B
= 2.4 V
15 LEDs ON
Per Character
0
4.2
V
0.2
0.4
451
902
902
mW
Rθ
J-PIN
50
25
25
°C/W
Notes:
1. All typical values at V
DD
= 5.0 V, T
A
= 25°C.
2. I
DD
Dynamic is the IC current while clocking column data through the on-board shift register at a clock frequency of 5 MHz.
3. I
DD
Static is the IC current after column data is loaded and not being clocked through the on-board shift register.
4. Four, eight, or sixteen characters are illuminated with a typical ASCII character composed of 15 dots per character.
5. The IC junction temperature T
J
(IC), is:
T
J
(IC) = (P
D
)(Rθ
J-PIN
+Rθ
PC-A
) + T
A
Where: P
D
is the total power into the display for HCMS-270X and HCMS-271X,
and the total power into one row of an HCMS-272X display.
P
D
= P(I
DDSon
) + P(I
COL
)
P(I
DDSon
) = I
DDSon
*V
DD
P(I
COL
) = 5*I
COL
*V
COL
*n/35*DF
n = Quantity of LED dots illuminated per character.
DF = LED on-time duty factor.
The IC junction temperature rise above the temperature of the V
DD
pin(s),
∆T
J
(IC), is:
∆T
J
(IC) = (P
D
)(Rθ
J-PIN
)
The IC junction temperature, T
J
(IC), must not exceed +125°C.
3-104
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