Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Standard Keypads
Keyboards and Keypads
SERIES 87
Low Profile
FEATURES
•1,2,3,4,5and6ButtonIndividual
Keyswitches
•12and16ButtonKeypads
•Maintain1/2"ButtonCenters,no
MatterHowYouMountModulesor
WhatCombinationYouUse
•Upto3,000,000Operationsper
Button
•LowProleDesign
Legends For Any Need
DesignKeyboardsandIndividualKeyswitches
to Virtually any Conguration Without Costly
Tooling.
Prototypes and small quantities:createyour
own with economical, insertable legend style
modules.
Production quantities:chooseeithercustom
printingorpermanentmolded-inlegends.
DIMENSIONS ininches(andmillimeters)
One Button Module
Two Button Module
Snap Dome Contact System
Hear and feel button actuation
You're assured of reliable button actuation
with the metal snap-dome under each Series
87button.Whenactuated,the domechanges
shape, providing audible and tactile feedback
totheoperator.
BUTTON
HOUSING
PCBOARD
CIRCUIT
PATH
DOME
.366±.010
(9,30±0,25)
SQ.BUTTON
A
.490±.010
(12,45±0,25)
.025±.002
(0,64±0,05)
SQ.TERMINAL
.350±.010
(8,89±0,25)
.075±.010TYP.
(1,91±0,25)
.300±.010
(7,62±0,25)
.095±.010
(2,41±0,25)
.095±.010
(2,41±0,25)
.064±.010TYP.
(1,63±0,25)
SWITCHKEYIDENTIFICATION
(FORREF.ONLY) .163±.010
(4,14±0,25)
.015±.010
(0,38±0,25)
BUTTON
PROJECTION
A
COMMON
TERMINALI.D.
(FORREF.ONLY)
TERMINALPINSAT
BOTTOMOFSWITCH
AB
.490±.010
(12,45±0,25)
.366±.010
(9,30±0,25)
SQ.BUTTON
.025±.002
(0,64±0,05)
SQ.TERMINAL
.095±.010
(2,41±0,25)
SWITCHKEY
IDENTIFICATION
(FORREF.ONLY)
.350±.010
(8,89±0,25)
.500±.010
(12,7±0,25)
.990±.010
(25,15±0,25)
.245±.010
(6,22±0,25)
.163±.010
(4,14±0,25)
.500±.010
(12,7±.010)
.300±.010
(7,62±0,25)
.095±.010
(2,41±0,25)
.075±.010
(1,91±0,25)
.064±.010TYP.
(1,63±0,25)
.015±.010
(0,38±0,25)
BUTTON
PROJECTION
AB
COMMON
TERMINALI.D.
(FORREF.ONLY)
TERMINALPINSAT
BOTTOMOFSWITCH
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Standard Keypads
Keyboards and Keypads
DIMENSIONS ininches(andmillimeters)
Three Button Module
Four Button Module
Five Button Module
Six Button Module
A B C
.499 ± .010
(12,45 ± 0,25)
.366 ± .010
(9,30 ± 0,25)
SQ. BUTTON
.025 ± .002
(0,64 ± 0,05)
SQ. TERMINAL
.095 ± .010
(2,41 ± 0,25)
SWITCH KEY
IDENTIFICATION
(FOR REF. ONLY)
.500 (12,7) 2 EQ. SPS.
TOL. NON-ACCUM.
± .010 (0,25)
.350 ± .010
(8,89 ± 0,25)
.163 ± .010
(4,14 ± 0,25)
.500 (2,7) 2 EQ. SPS.
TOL. NON-ACCUM.
± .010 (0,25)
.095 ± .010
(2,41 ± 0,25)
.075 ± .010
(1,91 ± 0,25)
.064 ± .010 TYP.
(1,63 ± 0,25)
1.499 ± .010
(37,85 ± 0,25)
.245 ± .010
(6,22 ± 0,25)
.300 ± .010
(7,62 ± 0,25)
.015 ± .010 (0,38 ± 0,25)
BUTTON PROJECTION
ABC
COMMON
TERMINAL I.D.
(FOR REF. ONLY)
TERMINAL PINS AT
BOTTOM OF SWITCH
A B CD
.499 ± .010
(12,45 ± 0,25)
.366 ± .010
(9,30 ± 0,25)
SQ. BUTTON
.025 ± .002
(0,64 ± 0,05)
SQ. TERMINAL
.095 ± .010
(2,41 ± 0,25)
SWITCH KEY
IDENTIFICATION
(FOR REF. ONLY)
.500 (12,7) 3 EQ. SPS.
TOL. NON-ACCUM.
± .010 (0,25) .350 ± .010
(8,89 ± 0,25)
.163 ± .010
(4,14 ± 0,25)
.500 (2,7) 3 EQ. SPS.
TOL. NON-ACCOM.
± .010 (0,25)
.095
± .010
(2,41
± 0,25)
.075 ± .010
(1,91 ± 0,25)
.064 ± .010
TYP.
(1,63 ± 0,25)
1.998 ± .015
(50,55 ± 0,38)
.245 ± .010
(6,22 ± 0,25)
.300 ± .010
(7,62 ± 0,25)
.015 ± .010
(0,38 ± 0,25)
BUTTON
PROJECTION
ABCD
COMMON
TERMINAL I.D.
(FOR REF. ONLY)
TERMINAL PINS AT
BOTTOM OF SWITCH
A B CDE
.499
± .010
(12,45
± 0,25)
.366 ± .010
(9,30 ± 0,25)
SQ. BUTTON
.025 ± .002
(0,64 ± 0,05)
SQ. TERMINAL
.095
± .010
(2,41
± 0,25)
SWITCH KEY IDENTIFICATION
(FOR REF. ONLY)
.350 ± .010
(8,89 ± 0,25)
.163 ± .010
(4,14 ± 0,25)
.095
± .010
(2,41
± 0,25)
.075 ± .010
(1,91 ± 0,25)
.064 ± .010
TYP.
(1,63 ± 0,25)
2.498 ± .015
(63,25 ± 0,38)
.500 (12,7) 4 EQ. SPS.
TOL. NON-ACCUM.
± .010 (0,25)
.245
± .010
(6,22
± 0,25)
.500 (2,7) 4 EQ. SPS.
TOL. NON-ACCUM.
± .010 (0,25)
.300 ± .010
(7,62 ± 0,25)
.015 ± .010
(0,38 ± 0,25)
BUTTON
PROJECTION
B
ACD
E
COMMON
TERMINAL I.D.
(FOR REF. ONLY)
TERMINAL PINS AT
BOTTOM OF SWITCH
A B CDEF
.499 ± .010
(12,45 ± 0,25)
.366 ± .010
(9,30 ± 0,25)
SQ. BUTTON
.025 ± .002
(0,64 ± 0,05)
SQ. TERMINAL
.095 ± .010
(2,41 ± 0,25)
SWITCH KEY
IDENTIFICATION
(FOR REF. ONLY)
.350 ± .010
(8,89 ± 0,25)
.163 ± .010
(4,14 ± 0,25)
.095 ± .010
(2,41 ± 0,25)
.075 ± .010
(1,91 ± 0,25)
.064 ± .010 TYP.
(1,63 ± 0,25)
.500 (2,7) 5 EQ. SPS.
TOL. NON-ACCUM.
± .010 (0,25)
.300 ± .010
(7,62 ± 0,25)
2.998 ± .015
(75,95 ± 0,38)
.500 (12,7) 5 EQ. SPS.
TOL. NON-ACCUM.
± .010 (0,25)
.245 ± .010
(6,22 ± 0,25)
.015 ± .010
(0,38 ± 0,25)
BUTTON
PROJECTION
BACDE F
COMMON
TERMINAL I.D.
(FOR REF. ONLY)
TERMINAL PINS
AT BOTTOM OF
SWITCH
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Standard Keypads
Keyboards and Keypads
12 3
45 6
78 9
10 11 12
.366 ± .010
(9,30 ± 0,25)
SQ. BUTTON
.500 ± .010 (12,7 ± 0,25)
2 EQ. SPS.TOL. NON-
ACCUM.
ROW 1
ROW 2
ROW 3
ROW 4
COL 1
COL 2
COL 3
SWITCH KEY
IDENTIFICATION
(FOR REF. ONLY)
.245 ± .010
(6,22 ± 0,25)
.500 ± .010
(12,7 ± 0,25)
3 EQ. SPS.
TOL. NON-
ACCUM.
.350 ± .015
(8,90 ± 0,25)
1.500 ± .010
(37,85 ± 0,25)
2.000 ± .010
(50,55 ± 0,25)
.695 ± .010
(17,65 ± 0,25)
.060 ± .010
(1,52 ± 0,25) TYP.
RETAINING
STUDS
BUTTON
NO. 1
COL = COLUMN
.025 ± .002
(0,64 ± 0,05)
Sq. Terminals
DIMENSIONS ininches(andmillimeters)
3x4 Keyboard
Termination ininches(andmillimeters)
3x4 Matrix Output Single Pole/Common Bus
DIMENSIONS ininches(andmillimeters)
4x4 Keyboard
2.000 + .000 – .005
(50,8 – 0,13)
12 3
56 7
910 11
13 14 15
4
8
12
16
SWITCH KEY
IDENTIFICATION
(FOR REF. ONLY)
.366 ± .010
(9,30 ± 0,25)
SQ. BUTTON
.500 ± .010 (12,7 ± 0,25)
3 EQ. SPS.TOL. NON-
ACCUM.
.250 ± .010
(6,35 ± 0,25)
.500 ± .010
(12,7 ± 0,25)
3 EQ. SPS.
TOL. NON-
ACCUM.
.350 ± .010 (8,90 ± 0,25)
.163 ± .010
(4,14 ± 0,25)
2.000 + .000
– .005
(50,8 – 0,13)
.064 ± .010
(1,63 ± 0,25)
TYP.
.100 (2,5)
TYP.
RETAINING
STUDS
BUTTON
NO. 1
ROW 1
ROW 2
ROW 3
ROW 4
COL 1
COL 2
COL 3
COL 4
COL = COLUMN
.025 ± .002
(0,64 ± 0,05)
Sq. Terminals
.300
B
C
D
E
K
L
M
.100 TYP
.500
.600
A
B
C
D
H
J
K
.100 TYP .500
L
M
N
E
F
G
SINGLE POLE/COMMON BUS
TERMINAL PIN-OUT
MATRIX TERMINAL PIN-OUT
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Standard Keypads
Keyboards and Keypads
SPECIFICATIONS
Rating
Rating at 24 Vdc:10milliamps,resistive
Contact Resistance:MOS,CMOS,TTL,DTL
compatible(10ohmsmaximum)
Voltage Breakdown:250Vacbetweenmutually
insulatedparts
Insulation Resistance:1,000megohmsmin.
Life Expectancy:3,000,000operationsper
button
Contact Bounce:Lessthan4millisecondsat
make,10millisecondsatbreak
Materials and Finishes
Housing:ABSpolycarbonate,black
Buttons: ABS plastic, white. Legends are
black.
Snap-On-Cap:Clearpolycarbonate
Contact Dome: Stainless steel, selectively
gold-plated
Terminals: Phosphorbronze
Operating Features
Button Travel: 0.011" (0,28) nominal, total
travel
Operating Temperature:-40°Cto+80°C
Typical Operating Force:300grams
Mounting: Mounts to 1/32" to 1/8" thick PC
board
CIRCUITRY, CODE AND TRUTH TABLES
Circuitry for Module Strips
Theone-buttonthrusix-buttonmoduleshave
single pole/common bus circuitry as shown
inthecircuitdiagram.Thecommonislocated
underbuttonA;itisnotmarkedontheactual
product.
Code and Truth Table
Dotsinthechartindicateconnectedterminals
whenswitchisclosed.Terminalsareidentied
onthekeyboard.
1
2
3
4
5
6
7
8
9
10
11
12
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
CODES
3x4 Matrix Single Pole/Common Bus
TERMINAL LOCATION
BUTTON LOCATION
KDEBCLMKHAJCBMEFLNGD
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•

•

•

•
•
•

•

•

•

•

CODES
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
4x4 Matrix Single Pole/Common Bus
TERMINAL LOCATION
BUTTON LOCATION
MNGFDEPQKNBALMDCQPFGSREHJ
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•

•

•

•
•
•

•

•

•
•

•
•
•
•

Termination ininches(andmillimeters)
4x4 Matrix Output Single Pole/Common Bus
COMMON
UNDER
BUTTONA
CIRCUITDIAGRAM
A
B
C
.163 ± .010
(4,14 ± 0,25)
.500 ± .010
(12,7 ± 0,25)
1.000 ± .010
(25,4 ± .010)
.695 ± .010
(17,65 ± 0,25)
.100
(2,5)
TYP.
BUTTON
NO. 1
.163 ± .010
(4,14 ± 0,25)
.025 ± .002
(0,64 ± 0,05)
Sq. Terminals
.500 ± .010
(12,7 ± 0,25)
1.000 ± .010
(25,4 ± .010)
.795 ± .010
(20,19± 0,25)
.100
(2,5)
TYP.
BUTTON
NO. 1
.300 ± .010
(7,62 ± 0,25)
D
E
F
GQ
P
N
M
A
B
C
D
E
F
G
H
JS
R
Q
P
N
M
L
K
.800 ± .010
(20,32 ± 0,25)
.025 ± .002
(0,64 ± 0,05)
Sq. Terminals
MATRIX TERMINAL PIN-OUT SINGLE POLE/COMMON BUS
TERMINAL PIN-OUT
.300
D
E
F
G
.100 TYP
1.000
M
N
P
Q
.800
.100 TYP 1.000
K
L
M
N
P
Q
R
S
E
F
G
H
A
B
C
D
J
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Standard Keypads
Keyboards and Keypads
Type No. Sample Style Sub Surface Top Surface
and Typical and Typical Character and Character and
Height Sizes Line Limitations Line Limitations
4GH088
.083"
1GH125
.138"
3GH187
.207"
2GH250
.276" ABC
ABCD
ABCDE
ABCDEFGH 4Characters
2Lines
3Characters
1Line
2Characters
1Line
N/A N/A
4Characters
2Lines
3Characters
1Line
2Characters
1Line
2Characters
1Line 15
ON
LAD
END
DATA
ON
LAD
END
DATA
ORDERING INFORMATION
Type of Module Part
or Legend Number
1Button 87CC3-201
2Button 87DC3-201
3Button 87EC3-201
4Button 87FC3-201
5Button 87GC3-201
6Button 87HC3-201
12 Button–Matrix 87AB3-201
12Button–
SP/ComBus 87AC3-201
16Button–Matrix 87BB3-201
16Button–
SP/ComBus 87BC3-201
InsertableLegend
Card 87AC2046
DryTransfer–Small 87-DT-2096-088
DryTransfer–Medium 87-DT-2096-125
DryTransfer–Large 87-DT-2096-187
Special Legends
Toordernon-standardmodules,informationis
requiredfortheareaslistedbelow.
Your special order will be assigned a part
number for future identication. This number
issequentiallyassignedandisnon-descriptive.
1. Type of Module. 1, 2, 3, 4, 5, 6, 12 or 16
button.
2. Mounting Orientation. Horizontal or
vertical.
3. Circuitry.Singlepole/commonbusisstandard
forallsinglerowmodules.For12or16button
keyboard,specifysinglepole/commonbusor
matrix.
4. Housing Color. Standard housing is black.
Optional stock colors include beige and
gray.
5. Button Types. Flat or concave buttons
are available for molded legends; flat,
concave, and snap-on cap styles
areavailableforprintedlegends.
6. Button Color.Standardbuttonsformolded
and printed legends are white with black
legend.Othercolorsavailableincludewhite
legends with red, green, dark blue, dark
gray and black buttons, or black legends
withyellow,blue,lightgray,beigeandwhite
buttons. Additional legend colors such as
redarealsoavailable.
7. Legend Style.Two-shotmoldedorprinted.
Printedlegendsmaybetoporsub-surface
printed.
8. Actual Legend. Specify for each button
usingthebuttonidenticationondrawings.
Price–ContactGrayhill.
STANDARD LEGENDS
Insertable Style Modules
For prototypes and small quantities
Standard insertable legend modules are an
economicalway to createyourownkeyboard
legend.Justremovetheclearbuttoncap,add
anylegend,andreplacethesnap-oncap.
Legend Inserts
For insertable legend modules
Give your keyboard modules the appearance
ofbeingprintedwithoutthecost.Self-adhesive,
printed legend inserts are die cut to t the
buttons. Legend sheet includes commonly
used symbols, terms, alpha characters A-Z,
and numeric characters 0-99 in News Gothic
Condensedtypestyle,printedinblackonclear
backing.Legendsheetsalsoincludeblankinserts
fordrytransferlettering.
87SeriesLegendSheetPart No. 87AC2046
Dry Transfer Legends
For additional legend inserts
Sheets include A thru Z in upper and lower
case,thenumericcharacters0thru9,aswell
ascommonlyusedsymbols.Thetypestyleand
sizearesimilartothechartforprintedlegends
shownbelow.
SmallPrint Part No. 87-DT-2096-088
MediumPrint Part No. 87-DT-2096-125
LargePrint Part No. 87-DT-2096-187
SPECIAL LEGENDS
Printed Legends
For medium volume or short runs
Virtuallyanycharacter,symbolorpatternwhich
can be photographed can be printed on the
button.Grayhillusesepoxyinkwhichbondsto
thesurfaceofthebutton.
The legend can be printed on either of two
surfaces:thetopsurfaceofaone-piecebutton,
ortheinternalsurfaceonthesnap-oncapstyle
formaximumwear.
The typestyle chart shows the style and the
approximate limitations of Grayhill's standard
type.However,limitationsdifferwiththesurfaceto
beprintedandtheactualcharacterstobeused.
Ifyourlegendexceedsthechartlimits,contact
Grayhillformoreinformation.Unlessspecied,
blacklegendsareprintedonwhitebuttons.
Additional Ink Color:Whiteinkisstockedfor
useondarkcoloredbuttons.
Additional Button Colors: For a molding
charge,wecanprovidebuttonsfromothercolors
which we may have in stock, such as black,
red,green,blue,oryellow.Non-stockbutton/ink
colorsmayrequireminimummaterialpurchase.
Toorder,ortocheckcurrentlystockedcolors,
contactGrayhill.
Molded-in Legends
For high volume production
For legends that will stand up to abuse and
constant wear for the life of your keyboard,
usemolded-in legends.Thetwo-shotmolding
processmoldsthelegendandbuttontogether.
Yourspeciallegendcanbemadefromexisting
Grayhillmoldsorwecantoolspecialones.
Buttonsareavailablewithblacklegendsmolded
inwhiteorotherlightbackgrounds,orwithwhite
legends molded into dark backgrounds. See
PrintedButtons,AdditionalButtonColors.Toorder,
contactGrayhill.