NBSG86A
http://onsemi.com
2
VTD1 D1
D1 VTD1
VTD0 D0
D0 VTD0
VEE
Q
VCC
OLS
SEL
VTSEL
56
7
8
16
15
14
13
12
11
10
9
1
2
3
4
NBSG86A
Exposed Pad
(EP)
Figure 1. QFN16 Pinout (Top View)
Table 1. Pin Description
Pin
Name
I/O
Description
QFN
1
OLS
Input
Input Pin for the Output Level Select (OLS). See Table
2.2
SEL
ECL, CML, LVCMOS,
LVDS, LVTTL Input
Inverted Differential Select Logic Input.
3
SEL
ECL, CML, LVCMOS,
LVDS, LVTTL Input
Noninverted Differential Select Logic Input.
4
VTSEL
Common Internal 50 W Termination Pin for SEL/SEL. See Table
7. (Note
1)5
VTD1
Internal 50 W termination pin. See Table
7. (Note
1)6
D1
ECL, CML, LVCMOS,
LVDS, LVTTL Input
Noninverted Differential Input 1. Internal 75 kW to VEE.
7
D1
ECL, CML, LVCMOS,
LVDS, LVTTL Input
Inverted Differential Input 1. Internal 75 kW to VEE and 36.5 kW to VCC.
8
VTD1
Internal 50 W Termination Pin. See Table
7. (Note
1)9
VCC
Positive Supply Voltage (Note
2)10
Q
RSECL Output
Noninverted Differential Output. Typically Terminated with 50 W Resistor to VTT = VCC
2 V.
11
Q
RSECL Output
Inverted Differential Output. Typically Terminated with 50 W Resistor to VTT = VCC 2 V
12
VEE
Negative Supply Voltage (Note
2)13
VTD0
Internal 50 W Termination Pin. See Table
7. (Note
1)14
D0
ECL, CML, LVCMOS,
LVDS, LVTTL Input
Inverted Differential Input 0. Internal 75 kW to VEE and 36.5 kW to VCC.
15
D0
ECL, CML, LVCMOS,
LVDS, LVTTL Input
Noninverted Differential Input 0. Internal 75 kW to VEE.
16
VTD0
Internal 50 W Termination Pin. See Table
7. (Note
1)EP
The Exposed Pad (EP) and the QFN16 package bottom is thermally connected to the die
for improved heat transfer out of package. The exposed pad must be attached to a heat
sinking conduit. The pad is electrically connected to the die but may be electrically and
thermally connected to VEE on the PC board.
1. In the differential configuration when the input termination pins (VTDx, VTDx, VTSEL) are connected to a common termination voltage,
or left open, and if no signal is applied then the device will be susceptible to selfoscillation.
2. All VCC and VEE pins must be externally connected to Power Supply to guarantee proper operation.
3. When an output level of 400 mV is desired and VCC VEE > 3.0 V, 2 kW resistor should be connected from OLS pin to VEE.