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參數(shù)資料
| 型號： | 74VCX245MTCX |
| 廠商： | Fairchild Semiconductor |
| 文件頁數(shù)： | 10/11頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TRANSCVR BIDIRECT LV 20TSSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 系列： | 74VCX |
| 邏輯類型： | 收發(fā)器，非反相 |
| 元件數(shù)： | 1 |
| 每個元件的位元數(shù)： | 8 |
| 輸出電流高，低： | 24mA，24mA |
| 電源電壓： | 1.4 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP |
| 包裝： | 帶卷 (TR) |
8
INDUSTRIAL TEMPERATURERANGE
IDT72V73260 3.3V TIME SLOT INTERCHANGE
DIGITAL SWITCH 16,384 x 16,384
TABLE 5 — CONTROL REGISTER (CR) BITS
TABLE 6 — CONNECTION MEMORY BITS
Reset Value:
0000H
BIT
NAME
DESCRIPTION
15
SRS
A one will reset the device and have the same effect as the RESET pin. Must be zero for normal operation.
(SoftwareReset)
14
OEI
When1,theTX16-31/OutputEnableIndication0-15pinswillbeOutputEnableIndication0-15andreflect theactiveorhigh-impedance
(OutputEnableIndication)
state of their corresponding output data streams. When 0, this feature is disabled and these pins are used as output data streams
TX16-31.
13
OEPOL
When1,aoneonanOutputEnableIndicationpindenotesanactivestateontheoutputdatastream;zeroonanOutputEnableIndication
(Output Enable Polarity)
pin denotes high-impedance state. When 0, a one on an Output Enable Indication pin denotes high-impedance and a zero denotes
an active state.
12
AOE
When 1, TX0-31 will behave as Output Enable Indication0-31 accordingly. These outputs will reflect the active or high-impedance
(All Output Enable)
stateofthecorrespondingoutputdatastreams(TX0-31)inanotherIDT72V73260ifprogrammedidentically. When0,theTSIoperates
in the normal switch mode.
11-10
Unused
Must be zero for normal operation.
9
MBP
When 1, the Connection Memory block programming feature is ready for the programming of Connection Memory HIGH bits,
(Memory Block Program)
bit 14 to bit 15. When 0, this feature is disabled.
8-7
BPD1-0
These bits carry the value to be loaded into the Connection Memory block whenever the memory block programming feature
(Block Programming
is activated. After the Memory Block Program bit in the Control Register is set to 1 and the Block Programming Enable is set to 1,
Data)
the contents of the bits BPD1-0 are loaded into bit 15 and 14 of the Connection Memory. Bit 13 to bit 0 of the Connection Memory
are set to 0.
6
BPE
Azerotoonetransitionofthisbitenablesthememoryblockprogrammingfunction.TheBlockProgrammingEnableandBPD1-0bits
(Begin Block
in the Control Register have to be defined in the same write operation. Once the Block Programming Enable bit is set HIGH, the
ProgrammingEnable)
devicerequirestwoframestocompletetheblockprogramming.Aftertheprogrammingfunctionhasfinished,theBlockProgramming
Enable, Memory Block Program and BPD 1-0 bits will be reset to zero by the device to indicate the operation is complete.
5
OSB
When ODE = 0 and Output Stand By = 0, the output drivers of the transmit serial streams are in high-impedance mode. When
(Output Stand By)
either ODE =1 or Output Stand By =1, the output serial streams drivers function normally.
4
SFE
AzerotoonetransitioninthisbitstartstheFrameEvaluationprocedure.WhentheCompleteFrameEvaluationbitintheFrameAlignment
(Start Frame Evaluation)
Register changes from zero to one, the evaluation procedure stops. To start another Frame Evaluation cycle, set this bit to
zero for at least one frame.
3-0
Unused
Must be zero for normal operation.
15
14
13
12
11
10
9876543210
SRS
OEI
OEPOL
AOE
0
MBP
BPD1
BPD0
BPE
OSB
SFE
0000
15
14
13
12
11
10
9876543210
MOD1
MOD0
SAB4
SAB3
SAB2
SAB1
SAB0
CAB8
CAB7
CAB6
CAB5
CAB4
CAB3
CAB2
CAB1
CAB0
Bit
Name
Description
15, 14
MOD1-0
MOD1 MOD0
MODE
(Switching Mode Selection)
0
Variable Delay mode
0
1
Constant Delay mode
1
0
Processor mode
1
Outputhigh-impedance
13-9
SAB4-0
The binary value is the number of the data stream for the source of the connection.
(Source Stream Address Bits)
8-0
CAB8-0
The binary value is the number of the channel for the source of the connection.
(Source Channel Address Bits)
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| 74VCX245WM | 功能描述:總線收發(fā)器 Bidir Transceiver RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
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