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參數(shù)資料
| 型號： | DS26900LN+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 4/49頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC JTAG MUX/SWITCH 144-LQFP |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 系列： | * |
| 功能： | * |
| 電壓電源： | 單電源 |
| 電壓 - 電源，單路/雙路(±)： | 3.14 V ~ 3.47 V |
| 電流 - 電源： | * |
| 工作溫度： | * |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 144-LQFP |
| 供應(yīng)商設(shè)備封裝： | 144-LQFP（20x20） |
| 包裝： | 托盤 |
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__________________________________________________________________________________________DS26900
12
NAME
PIN
TYPE
FUNCTION
PTRST
37
I
Periphery JTAG Chain Test Reset (Active Low). During normal operation, this
signal is asserted low.
PTMS
35
Ipu
Periphery JTAG Chain Test Mode Select. This input must be driven to a logic level
during normal operation.
ACT
97
O
Active (Active Low). Indicates that this device is active when low. An active device is
determined by the MSB of the instruction code and the state of the mode pins M0 and
M1.
PREN
7
I
Pull-Resistor Enable. When connected to VDD, the following pull resistors are
enabled:
20k
pulldown on TCK1, TCK2, ETDI, ETCK, TMS1, TMS2
10k
pullup on TDI1, TDI2, ETDO, TDO1, TDO2, TRST1, TRST2, ECFG, ETMS
When connected to VSS, the pull resistors on the signals above are disabled.
When multiple devices are connected in parallel only one device should have PREN
connected = VDD.
VDD
13, 36,
83, 119
P
Positive Supply. 3.3V
±5%. All V
DD signals should be tied together.
VSS
26, 48,
108,
133
P
Ground Reference. All VSS signals should be tied together.
Configuration Mode. The master is communicating with the Switch TAP Controller in the DS26900.
Transparent Mode. The master is communicating directly with the selected secondary port.
All pins are I/O in periphery JTAG mode except the
TEST, TMREQ1, TMREQ2, EREQ, M1, M0, HIZ, RST, PTRST, PTCK, PTDI, PTDO, and
PTMS pins. All outputs are rated at 8mA.
Unused inputs must be tied to logic 1 or 0 if not used and a pullup/pulldown is not present.
O = Output
I = Input
Ipu = Input with an internal pullup
Ipd = Input with an internal pulldown
P = Power
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| DS26900LN+ | 功能描述:多路器開關(guān) IC JTAG MUX RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| DS26900N+ | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:JTAG Multiplexer/Switch |
| DS26C31 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:CMOS QUAD TRI-STATE DIFFERENTIAL LINE DRIVER |
| DS26C31 DIE | 制造商:Texas Instruments 功能描述: |
| DS26C31_BBA3026X WAF | 制造商:Texas Instruments 功能描述: |
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