參數(shù)資料
型號(hào)： MIC2551ABTS
廠商： MICREL INC
元件分類： 通用總線功能
英文描述： USB TRANSCEIVER
中文描述： LINE TRANSCEIVER, PDSO14
封裝： TSSOP-14
文件頁(yè)數(shù)： 2/11頁(yè)
文件大小： 79K
代理商： MIC2551ABTS
MIC2551A
Pin Configuration
Micrel
M9999-051004
2
May 2004
1
VIF
SPD
RCV
VP
VM
CON
GND
14 VBUS
VPU
VTRM
D+
D-
OE#
SUS
13
12
11
10
9
8
2
3
4
5
6
7
14-Pin TSSOP
1
2
3
4
12
11
10
9
16 15 14 13
5
6
7
8
SPD
RCV
VP
VM
VTRM
D+
D
—
OE#
V
V
V
N
N
S
G
C
16-Pin MLF (ML)
Pin Description
Pin Number
MIC2551ABTS MIC2551ABML
Pin Number
Pin Name
I/O
Pin Function
1
15
VIF
I
System Interface Supply Voltage: Used to provide reference
supply voltage for system I/O interface signaling.
2
1
SPD
I
Edge Rate Control: A logic HIGH operates at edge rates for
“
full
speed
”
operation. A logic LOW operates edge rates for
“
low
speed
”
operation.
3
2
RCV*
O
Receive Data: Output for USB differential data.
4
3
VP*
I/O
If OE# = 1, VP = Receiver output (+)
If OE# = 0, VP = Driver input (+)
5
4
VM*
I/O
If OE# = 1 VM, = Receiver output (-)
If OE# = 0, VM = Driver input (-)
6
5
CON
I
CONNECT (Input): Controls state of VPU. Refer to VPU pin
description for detail.
7
6
GND
Ground Reference.
8
7
SUS
I
Suspend: Active-High. Turns off internal circuits to reduce supply
current.
9
9
OE#*
I
Output Enable: Active-Low. Enables the transceiver to transmit
data onto the bus. When inactive, the transceiver is in the receive
mode.
10/11
10/11
D
–
, D+*
I/O
Differential data lines conforming to the USB standard.
12
12
VTRM
O
3.3V Reference Supply Output: Requires a minimum 0.1
μ
F
decoupling capacitor for stability. A 1
μ
F capacitor is recom-
mended
13
13
VPU
O
Pull-up Supply Voltage Output: Used to connect 1.5k
pull-up
speed detect resistor. If CON = 1, VPU is high impedance.
If CON = 0, VPU = 3.3V.
14
14
VBUS
I
USB Bus Supply Voltage: Used to power USB transceiver and
internal circuitry.
8,16
NC
No connect.
* See Table 1 for description of logic states.
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