HT62104 Datasheet, PDF (1/14 Pages) Holtek Semiconductor Inc – Infrared Remote Encoder

HT62104
Infrared Remote Encoder
Feature
• Operating voltage: 2.0V ~ 5.0V
• Eight data key control
• Two custom codes for product differentiation
• Start oscillation after key press for power saving
• LED output to indicate transmission status
• Direct 38kHz output frequency infrared LED
modulation
• Signal gap time: T= 4 × 192 × (1/455kHz) ≈
4 × 16 × (1/38kHz)
–– Signal gap time: 4T
• Low power consumption
• 16-Pin DIP/NSOP package
Applications
• Fan remote controls
• Audio remote controls
• Toy remote controls
• Consumer products remote controls
General Description
The HT62104 devices are high performance infrared
remote control encoders which are manufactured in
silicon gate CMOS technology. The HT62104 devices
support eight data key inputs and an LED output to
indicate the transmission status. A signal transmission
is automatically activated when any key data input
lines change status from high to low.
The device generates a signal which is composed of a
Start code, a Custom code and a Data code and sends
the signal to its output pin. This can be provided to an
IR (38kHz carrier) transmission medium.
Block Diagram
VDD
VDD1
VSS
C1
C2
Encoder
Output Driver
VSS1
DOUT
LED
K1
K2
K3
K4
K5
Data Latch
K6
K7
K8
Timing Generator
Internal RC oscillator
Rev. 1.00
1
May 07, 2012