Rainbow Electronics MAX9395 - Manual (Page 5)

MAX9394/MAX9395
2:1 Multiplexers and 1:2 Demultiplexers with
Loopback
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Pin Description
PIN
TQFP QFN
NAME FUNCTION
1, 2, 3, 30,
31, 32
1, 2, 28 N.C. No Connection. Not internally connected.
4, 9, 20, 25 3, 8, 18, 23 GND Ground
5 4 ENB
Channel B Output Enable. Drive ENB high to enable the LVDS outputs for channel B.
An internal 435k
Ω resistor to GND pulls ENB low when unconnected.
6 5 OUTB
Channel B LVDS Noninverting Output. Connect a 100 Ω termination resistor between
OUTB and OUTB at the receiver inputs to ensure proper operation.
7 6 OUTB
Channel B LVDS Inverting Output. Connect a 100 Ω termination resistor between
OUTB and OUTB at the receiver inputs to ensure proper operation.
8, 13, 24, 29 7, 22, 27 V CC
Power-Supply Input. Bypass each V CC to GND with a 0.1µF and 0.01µF ceramic
capacitor. Install both bypass capacitors as close to the device as possible, with the
0.01µF capacitor closest to the device.
10 9 INB0
LVDS/HSTL (MAX9394) or LVPECL/CML (MAX9395) Inverting Input. An internal
128k
Ω pullup resistor to V
CC pulls the input high when unconnected (MAX9394). An
internal 68k Ω resistor to GND pulls the input low when unconnected (MAX9395).
11 10 INB0
LVDS/HSTL (MAX9394) or LVPECL/CML (MAX9395) Noninverting Input. An internal
128k
Ω pullup resistor to V
CC pulls the input high when unconnected (MAX9394). An
internal 68k Ω resistor to GND pulls the input low when unconnected (MAX9395).
12 11 LB_SELB
Loopback Select for Channel B Output. Connect LB_SELB to GND or leave
unconnected to reproduce the INB_ (INB_) differential inputs at OUTB (OUTB).
Connect LB_SELB to V
CC to loop back the INA (INA) differential inputs to OUTB
(OUTB). An internal 435k Ω resistor to GND pulls LB_SELB low when unconnected.
14 12 INB1
LVDS/HSTL (MAX9394) or LVPECL/CML (MAX9395) Inverting Input. An internal
128k
Ω pullup resistor to V
CC pulls the input high when unconnected (MAX9394). An
internal 68k Ω resistor to GND pulls the input low when unconnected (MAX9395).
15 13 INB1
LVDS/HSTL (MAX9394) or LVPECL/CML (MAX9395) Noninverting Input. An internal
128k
Ω pullup resistor to V
CC pulls the input high when unconnected (MAX9394). An
internal 68k Ω resistor to GND pulls the input low when unconnected (MAX9395).
16 14 BSEL
Channel B Multiplexer Control Input. Selects the differential input to reproduce at the
B channel differential output. Connect BSEL to GND or leave unconnected to select
the INB0 (INB0) set of inputs. Connect BSEL to V
CC to select the INB1 (INB1) set of
inputs. An internal 435k Ω resistor to GND pulls BSEL low when unconnected.
17 15 ENA1
Channel A1 Output Enable. Drive ENA1 high to enable the A1 LVDS outputs. An
internal 435k
Ω resistor to GND pulls the ENA1 low when unconnected.
18 16 OUTA1
Channel A1 LVDS Inverting Output. Connect a 100 Ω termination resistor between
OUTA1 and OUTA1 at the receiver inputs to ensure proper operation.
19 17 OUTA1
Channel A1 LVDS Noninverting Output. Connect a 100 Ω termination resistor between
OUTA1 and OUTA1 at the receiver inputs to ensure proper operation.