MAX3450 MAXIM [Maxim Integrated Products], MAX3450 Datasheet - Page 6

• Manufacturer Part Number: MAX3450
• Manufacturer: MAXIM [Maxim Integrated Products]

±15kV ESD-Protected USB Transceivers
6
TSSOP
10
11
12
13
14
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1
2
3
4
5
6
7
8
9
PIN
5, 8, 16
QFN
15
10
11
12
13
14
1
2
3
4
6
7
9
NAME
ENUM
V
V
GND
SPD
RCV
N.C.
SUS
N.C.
VM
OE
D+
BD
VP
TRM
V
D-
BUS
L
Digital I/O Connections Logic Supply. Connect a +1.65V to +3.6V supply to V
with a 0.1µF ceramic capacitor.
Speed-Selector Input. Connect SPD to GND to select the low-speed data rate (1.5Mbps). Connect
SPD to V
Differential-Receiver Output. RCV responds to the differential input on D+ and D- (Tables 3 and 4).
RCV asserts low if SUS = V
Receiver Output/Driver Input. VP functions as a receiver output when OE = V
when receiving. VP functions as a driver input when OE = GND.
Receiver Output/Driver Input. VM functions as a receiver output when OE = V
when receiving. VM functions as a driver input when OE = GND.
No Connection. Not internally connected.
Ground
Suspend Input. Drive SUS low for normal operation. Drive SUS high to put the
MAX3450E/MAX3451E/MAX3452E into suspend mode. RCV asserts low in suspend mode.
VP and VM remain active in suspend mode.
Output Enable. Drive OE to GND to enable the transmitter outputs. Drive OE to V
transmitter outputs. OE also controls the I/O direction of VP and VM (Tables 3 and 4).
U S B Inp ut/O utp ut. For O E = GN D , D - functi ons as a U S B outp ut, w i th V M p r ovi d i ng the i np ut si g nal . For
O E = V
a 1.5kΩ r esi stor fr om D - to V
U S B Inp ut/O utp ut. For O E = GN D , D + functi ons as a U S B outp ut, w i th V P p r ovi d i ng the i np ut si g nal . For
O E = V
a 1.5kΩ r esi stor fr om D + to V
Internal Regulator Output. V
(min) ceramic capacitor as close to the device as possible. V
V
V
resistor (MAX3450E and MAX3452E). Do not use V
No Connection. Not internally connected (MAX3450E).
Enumerate Function Selection Input (MAX3451E). Drive ENUM to V
resistor between V
disconnect the internal 1.5kΩ resistor. For SPD = V
For SPD = GND, the 1.5kΩ pullup resistor connects to D-.
Bus-Detection Output (MAX3452E). The push-pull BD output asserts low and the device enters
sharing mode if V
USB Power-Supply Input. Connect a +4.0V to +5.5V power supply to V
the internal linear regulator. Bypass V
device as possible. Connect V
with an external power supply (+3.3V ±10%).
BUS
TRM
. Alternatively, drive V
provides power to internal circuitry and provides the pullup voltage for an external USB pullup
L
L
, D - functi ons as a U S B i np ut, w i th V M functi oni ng as a si ng l e- end ed r ecei ver outp ut. C onnect
, D + functi ons as a U S B i np ut, w i th V P functi oni ng as a si ng l e- end ed r ecei ver outp ut. C onnect
L
to select the full-speed data rate (12Mbps).
BUS
TRM
< +3.6V. BD asserts high if V
and D+ or D-, depending on the SPD state. Drive ENUM to GND to
TRM
L
T RM
TRM
T RM
.
BUS
directly with a +3.3V ±10% supply (MAX3450E and MAX3451E).
for l ow - sp eed ( 1.5M b p s) op er ati on ( M AX 3450E and M AX 3452E ) .
provides a regulated +3.3V output. Bypass V
for ful l - sp eed ( 12M b p s) op er ati on ( M AX 3450E and M AX 3452E ) .
and V
BUS
TRM
to GND with a 0.1µF ceramic capacitor as close to the
FUNCTION
together when powering the MAX3450E or MAX3451E
TRM
L
BUS
, the 1.5kΩ pullup resistor connects to D+.
to power external circuitry.
> +4.0V.
TRM
normally derives power from
L
to connect the internal 1.5kΩ
BUS
Pin Description
. V
L
L
L
BUS
TRM
. VP duplicates D+
. VM duplicates D-
. Bypass V
L
provides power to
to disable the
to GND with a 1µF
L
to GND