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 Criteria
Rating at 24 Vdc: - 10 milliamps resistive
(max.)
Contact Bounce: 4 milliseconds maximum
at make; 10 milliseconds, at break
Contact Resistance: 10 ohms maximum
Life Expectancy: 3 million operations/button
Insulation Resistance: >1,000 megohms
Operating Features
Pre-Travel: .030 inches minimum
Operating Force: 20 ± 4 ounces
Humidity: 0 to 98% (no condensation)
Materials and Finishes
Terminal Pins: Copper alloy CDA 725
PC Board: FR-4 glass cloth epoxy
Dome Retainer/Rear Seal Sheet: Polyester
Mounting Studs: Phosphor bronze
Optional Hex Nut: Stainless steel, passivated
Optional EMI Shield: Aluminum foil
Keypad: Silicone rubber
4 x 4
3 x 4
SCHEMATIC AND TRUTH TABLE
84BN-AB-022AN
N = Mounting Nuts Supplied and Shipped Loose, Blank = No Nuts Supplied
Led Color: A = Red, B = Yellow, C = Green, D = Orange
84B = Insertable Legend, Sealed and Shielded
84BN = Insertable Legend, Sealed and Non-Shielded
Keyboard Size: A = 3 x 4, B = 4 x 4
B = Matrix Code
ORDERING INFORMATION
SELF-ADHESIVE LEGEND SHEETS
Each 8.5" x 11" legend sheet contains commonly used symbols, terms, alpha characters and 0-9 in helvetica bold type. Self- adhesive
legends are clear urethane on a chrome mylar base. Adhesive is silicone/acrylic. Legends can be purchased in the following ways:
1. Entire legend sheets: Part numbers 84AC5012-1, -2, -3 OR -4.
2. Individual legends: Part numbers 84AC5012-0001, -0002 etc. (Individual legend pins are for groups of 10 legends each)
3. See Grayhill drawing 84AC5012-X for detailed information on available legends, sizes and fonts.
LED Color Resistor
(OHMS)
Typ. Current Consumption
(With 5V Pwr. Supply)
Forward Voltage
Min. Typ. Max. 3 x 4 4 x 4
Red - 1.95 2.40 43 155mA 205mA
Yellow/Green - 1.95 2.40 43 155mA 205mA
Green 1.50 - 2.40 43 155mA 205mA
Orange - 1.95 2.40 43 155mA 205mA
Keypads
8
