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参数资料
| 型号： | DS26900LN+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 48/49页 |
| 文件大小： | 0K |
| 描述： | IC JTAG MUX/SWITCH 144-LQFP |
| 标准包装： | 90 |
| 系列： | * |
| 功能： | * |
| 电压电源： | 单电源 |
| 电压 - 电源，单路/双路(±)： | 3.14 V ~ 3.47 V |
| 电流 - 电源： | * |
| 工作温度： | * |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 144-LQFP |
| 供应商设备封装： | 144-LQFP（20x20） |
| 包装： | 托盘 |
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__________________________________________________________________________________________DS26900
8
NAME
PIN
TYPE
FUNCTION
TMS1
24
Ipd/O
Test Master 1 Test Port Test Mode Select
Master Mode = Input
Slave Mode = Output
When PREN = VDD, an internal 20k pulldown resistor is connected to this pin.
TMREQ1
19
Ipu
Test Master 1 Master Request (Active Low). (Internal 10k
Pullup) When EREQ is
inactive and
TMREQ1 is active, this pin selects the test master port 1 as the master.
When switching
TMREQ1, none of the master clocks should be toggling.
MGNT1
18
O
Master Grant 1 (Active Low). Asserted low when Test Master 1 is the arbitrated
master.
TCK2
30
Ipd/O
Test Master 2 Test Port Clock
Master Mode = Input
Slave Mode = Output
When PREN = VDD, an internal 20k pulldown resistor is connected to this pin.
TDI2
28
Ipu/O
Test Master 2 Test Port Serial Data Input
Master Mode = Input
Slave Mode = Output
When PREN = VDD, an internal 10k pullup resistor is connected to this pin.
TDO2
29
I/O
Test Master 2 Test Port Serial Data Out
Master Mode = Output
Slave Mode = Input
When PREN = VDD, an internal 10k pullup resistor is connected to this pin.
TRST2
31
Ipu/O
Test Master 2 Test Port Test Reset (Active Low). Asserting this pin low (when
master) puts the DS26900 into configuration mode, allowing access to the Switch
TAP Controller. Toggling
TRST2 when not the arbitrated master has no effect. This
pin does not directly affect secondary port resets.
Master Mode =
TRST2 Input
Slave Mode =
TRST2 Output
When PREN = VDD, an internal 10k pullup resistor is connected to this pin.
TMS2
32
Ipd/O
Test Master 2 Test Port Test Mode Select
Master Mode = Input
Slave Mode = Output
When PREN = VDD, an internal 20k pulldown resistor is connected to this pin.
TMREQ2
27
Ipu
Test Master 2 Master Request (Active Low) (Internal 10k
Pullup) When EREQ
and
TMREQ1 are inactive and TMREQ2 is active, this pin selects the test master
port 2 as the master. When switching
TMREQ2, none of the master clocks should be
toggling.
MGNT2
25
O
Master Grant 2 (Active Low). Asserted low when Test Master 2 is the arbitrated
master.
STCK1
91
O
Secondary Port 1 Test Clock
STDI1
92
O
Secondary Port 1 Serial Data In
STDO1
93
Ipu
Secondary Port 1 Serial Data Out (Internal 10k
Pullup)
STRST1
90
O
Secondary Port 1 Test Reset (Active Low)
STMS1
89
O
Secondary Port 1 Test Mode Select (Internal 20k
Pulldown)
STCK2
86
O
Secondary Port 2 Test Clock
STDI2
87
O
Secondary Port 2 Serial Data Input
STDO2
88
Ipu
Secondary port 2 Serial Data Out (Internal 10k
Pullup)
STRST2
85
O
Secondary Port 2 Test Reset (Active Low)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS26900LN+ | 功能描述:多路器开关 IC JTAG MUX RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| DS26900N+ | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:JTAG Multiplexer/Switch |
| DS26C31 | 制造商:NSC 制造商全称: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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