4
21737-0252, Rev. A
7-27-2000
Transmitter Electrical Interface (over Operating Case Temperature Range)
Receiver Electrical Interface (over Operating Case Temperature Range)
Electrical Power Supply Characteristics (over Operating Case Temperature Range)
Transmitter: When the DATA+ input is at logic HIGH and
DATA- input is at logic LOW, the LED is ON; and vice versa.
The transmitter is normally enabled (i.e. when the TX
DISABLE control input is not connected). When the TX
DISABLE control input voltage is higher than VCC - 1.3 V, the
LED is turned off independent of the input data.
Receiver: Both differential DATA+ and DATA- outputs are
LV-PECL levels requiring proper termination (see
recommended interface circuits). For optimum performance,
both outputs should be terminated in the same manner, even if
only one is used.
The Signal Detect circuit monitors the level of the incoming
optical signal and generates a logic LOW signal when
insufficient photocurrent is produced. If the SIGNAL DETECT
output is LV-TTL level, no termination is required. If the
SIGNAL DETECT output is LV-PECL level, a termination
resistor of 160 ohms to GND is required.
DTR-
xxx
-LC & DTR-
xxx
-LS
Application Notes
Parameter Symbol Minimum Typical Maximum Units
Supp ly Voltag e VCC 3.13 3.3 3.47 V
Supply Current 1TX ICC,TX - 110 130 mA
mA
RX ICC,RX - 70 100
1 Supply current does not include termination resistor current.
Parameter Symbol Minimum Typical Maximum Units
O ut put HI G H Voltage ( LV-PECL) 1 VOH VCC - 1.10 -VCC - 0.90 V
O ut put LOW Voltage ( LV- PECL) 1 VOL VCC - 1.84 -VCC - 1.60 V
O ut put HI G H Voltage ( LV-TTL) VOH 2.4 - VCC
O utput LO W Voltage ( LV- TTL) VOL 0-0.8
Output C urrent IO--25mA
1
Wi th 50 ohm ter mi nate d to VCC - 2 volts.
Pin Assignments
PIN FUNCTION LOGIC FAMILY
1RX GND -
2V
CCRX -
3 SD ( RX SIGNAL DETECT) LV-TTL (standard ) or
LV-PECL ("E" o ption)
4 RD- ( RX DATA OUT - ) LV- PECL
5 RD+ (RX DATA OUT + ) LV- PECL
6V
CCTX -
7TX GND -
8 TX DI SABLE LV-T TL
9 TD+ (TX DATA IN +) LV-PECL
10 TD- (TX DATA IN -) LV-PECL
Parameter Symbol Minimum Typical Maximum Units
Input HIGH Voltage VIH VCC - 1. 165 -VCC - 0. 70 V
Input LO W Voltage VIL VCC - 1. 950 -VCC - 1.475 V
Data Input Current - HIGH IH- - 150 mA
Data Input Current - LOW IL0.5 - - mA
Tr ansmitt er Disable Volt age VDIS VCC -1.3 -VCC V
Tr ansmitt er Enable Voltage VEN 0-0.8V