USB1T20MTCX View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
USB1T20MTCX Datasheet PDF : 9 Pages
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Terminal and Pin Descriptions
Terminal or Pin
Terminal or Pin
Number
Name
MLP14D MTC14
RCV
13
3
OE
12
2
MODE
11
1
Vpo,
Vmo / FSEO
8, 9 12, 13
Vp, Vm
14, 1 4, 5
D+, D−
SUSPND
SPEED
VCC
GND
NC
7, 6 11, 10
2
6
5
9
10
14
3
7
4
8
I/O
Description
O
I
I
I
O
AI/O
I
I
—
—
Receive data. CMOS level output for USB differential input
Output Enable. Active LOW, enables the transceiver to transmit data on the
bus. When not active the transceiver is in receive mode.
Mode. When left unconnected, a weak pull-up transistor pulls it to
VCC and in this GND, the Vmo/FSEO pin takes the function of FSEO
(Force SEO).
Inputs to differential driver. (Outputs from SIE).
MODE
0
Vpo
Vmo/FSEO
RESULT
0
0
Logic “0”
0
1
SE0
1
0
Logic “1”
1
1
SE0
1
0
0
SE0
0
1
Logic “0”
1
0
Logic “1”
1
1
Illegal code
Gated version of D− and D+. Outputs are logic “0” and logic “1”. Used to
detect single ended zero (SE0), error conditions, and interconnect speed.
(Input to SIE).
Vp
Vm
RESULT
0
0
SE0
0
1
Low Speed
1
0
Full Speed
1
1
Error
Data+, Data−. Differential data bus conforming to the Universal Serial Bus
standard.
Suspend. Enables a low power state while the USB bus is inactive. While
the SUSPND pin is active it will drive the RCV pin to a logic “0” state. Both
D+ and D− are 3-STATE.
Edge rate control. Logic “1” operates at edge rates for “full speed”.
Logic “0” operates edge rates for “low speed”.
3.0V to 3.6V power supply
Ground reference
No Connect
Functional Truth Table
Mode
0
0
0
0
1
1
1
1
X
X
X = Don’t Care
Input
Vpo
Vmo/FSEO
0
0
0
1
1
0
1
1
0
0
0
1
1
0
1
1
X
X
X
X
Z = 3-STATE
OE SUSPND
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
1
U = Undefined State
I/O
D+
D−
0
1
0
0
1
0
0
0
0
0
0
1
1
0
1
1
Z
Z
Z
Z
Outputs
RCV
Vp
Vm
Result
0
0
1
Logic 0
U
0
0
SE0
1
1
0
Logic 1
U
0
0
SE0
U
0
0
SE0
0
0
1
Logic 0
1
1
0
Logic 1
U
U
U Illegal Code
U
U
U
D+/D− Hi-Z
U
U
U
D+/D− Hi-Z
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