5
Pin Symbol Functional Description Logic Reference
MS MS Mounting Stud n/a 4
HL HL Housing Lead n/a 5
1 Vee
r
Receiver Signal Ground n/a
2 Vcc
r
ReceiverPowerSupply n/a
3 SD Signal Detect TTL 6
4 RD- Receiver Data Out Bar PECL 7
5 RD+ Receiver Data Out PECL 7
MS MS Mounting Stud n/a 4
HL HL Housing Lead n/a 5
6 Vcc
t
TransmitterPowerSupply n/a
7 Vee
t
Transmitter Signal Ground n/a
8 T
Dis
Transmitter Disable TTL 8
9 TD+ Transmitter Data In PECL 9
10 TD- Transmitter Data In Bar PECL 9
Parameter Symbol Minimum Typical Maximum Units Reference
Transmitter Supply Current I
CC
Tx 55 75 mA
PowerDissipation P
DISS
180 260 mW
Data Input Dierential Voltage V
IH
-V
IL
400 1600 mV
PowerSupplyNoiseRejection PSNR 100 mV
P-P
10
Notes:
4. Themountingstudsprovidemechanicalattachmenttothecircuitboardandconnectiontotheequipmentchassisground.TheMSviaholes
must not be tied to signal ground and may be tied to chassis ground.
5. The housing leads provide additional signal grounding. The HL via holes must be tied to signal ground.
6. Normaloperation: Logic“1”output
No-signalcondition: Logic“0”output
7. ACcoupleddierentialoutput.LVPECLsignal.InterfacingICsmayrequireinternalbiasing.
8. TransmitterOutputDisabled: (Vcc
t
-1.3 V)<V<Vcc
t
TransmitterOutputEnabled:Vee
t
< V < (Vee
t
+0.8V)
9. AC coupled dierential input, no external termination required. 100 ohm internal termination provided.
10. Tested with a 100 mV
P-P
sinusoidal signal in the frequency range from 10 KHz to 2 MHz on the V
CC
supply with the recommended power sup-
plylter(withC8)inplace.Typically,achangeinsensitivityoflessthan1dBisexperienced.
Table 5 - Transmitter Electrical Characteristics
HFBR-5911LZ (T
C
=0ºCto+70ºC,V
CC
=3.14Vto3.47V)
HFBR-5911ALZ (T
C
=-10°Cto+85°C,V
CC
=3.14Vto3.47V)
Figure 1 - Pin out drawing
Table 4 - Pin Description