COMPONENT DATA

OM 1058

Infra-Red CAR-KEY Transmitter

OM1058 in case SO-8

1. DESCRIPTION AND APPLICATION

This device is intended to be used in an infra-red remote-control car-key to transmit, when a

button is pushed, an individual code to a receiver in the car to alternately open and lock the
doors. The code is stored in a 24-bit EEPROM which is programmed by the equipement
manufacturer. An input selects between a single or a repetitive transmission. It uses a fixed
frequency to code the data.

This device is identical to an OM1058.

FIGURE 1 : "Block Diagramm"

OUT

www.DataSheet4U.com MODE
I/O EEPROM
PROG
SERCLK

VDD
VSS RCOSC LOGIC P.D.R
RCOS

1 of 1 OM1058.doc
 COMPONENT DATA

OM 1058

2. ELECTRICAL REQUIREMENTS
2.1 MAXIMUM RATINGS
TABLE 1 : "Maximum ratings"
PARAMETERS SYMBOL VALUE UNIT

DC Supply Voltage VDD -0.3 to 7 V

Voltage range on any input (except pin3) VI -0.8 to VDD +0.8 V

Voltage range pin 3 VI -0.8 to VDD +3 V

Storage temperature (unprogrammed) Tstgu -65 to +150 C

Storage temperature range (programmed) Tstgp -65 to +85 C

Operating ambient temperature range Tamb -40 to +85 C

2.2 ELECTRICAL CHARACTERISTICS

www.DataSheet4U.com
TABLE 2 : "Electrical Parameters"
TA = 25C, and VDD = 5V unless otherwise noted
CHARACTERISTIC SYMBOL MIN TYP MAX Units

OPERATING VOLTAGE VDD 2.5 6.5 V

OPERATING CURRENT at 5V, 25C, 50KHz IDD 500 A

INPUT VOLTAGE (pin 2,3,6) V

low VIL -0.8 0.3*VDD V
high VIH 0.7*VDD VDD +0.8

INPUT VOLTAGE (pin 7), programming

low VIL -0.8 0 V
high VIH VDD VDD + 0.8 V

LEAKAGE CURRENT (pin 2,3,6 at VSS or VDD) IL 1 A

LEAKAGE CURRENT (pin 7 at VSS)

INPUT CURRENT (pin 3) at 5V, pin3 = 7.5V IIN 3 mA

OUT sink current at 5V, 25C, OUT=4V 25 100 mA

OUT source current at 5V, 25C, OUT=0V -400 -1200 A

RCOS frequency with 51K, 560pF, 3.5V 40 60 KHz

SERCLK resistor to VSS (at 25C) 25 100 kOhm

2 of 2 OM1058.doc
 COMPONENT DATA

OM 1058

3. DRAWINGS, TEST CIRCUITS AND TABLES

FIGURE 2 : "Pinning Diagramm"

1 n.c VDD 8

2 MODE RCOS 7

3 PROG SERCLK 6

4 VSS OUT 5

PINNING:
1. N.C
2. MODE input to select single or repetitive transmission
3. PROG input used to ptogram the EEPROM
4. VSS ground
5. OUT CMOS output
6. SERCLK input used to program the EEPROM
www.DataSheet4U.com 7. RCOS RC oscillator and used to program the EEPROM
8. VDD positive supply

FIGURE 3 : "Typical Application Diagramm"

3 of 3 OM1058.doc
 COMPONENT DATA

OM 1058

FIGURE 4 : "Outline Dimensions"

E H
1 N/2

B
D h x 45

A
L
e C

A1
SYMBOL VARIATIONS
MIN MAX
www.DataSheet4U.com A 1,35 1,75
A1 0,1 0,25
B 0,36 0,49
C 0,19 0,25
D 4,8 5,0
E 3,8 4,0
N 8
e 1,27
H 5,8 6,2
h
L 0,3

Ind. Date Issue Author

A 19 may 1993 Original release A.L.
B 16 june 1999 Update B.G.

4 of 4 OM1058.doc