參數(shù)資料
型號(hào): SN54ABT8240
廠商: Texas Instruments, Inc.
英文描述: Scan Test Devices With Octal Buffers(掃描測(cè)試裝置(帶八緩沖器))
中文描述: 掃描測(cè)試設(shè)備與八路緩沖器(掃描測(cè)試裝置(帶八緩沖器))
文件頁(yè)數(shù): 3/19頁(yè)
文件大?。?/td> 391K
代理商: SN54ABT8240
SN54ABT8240, SN74ABT8240
SCAN TEST DEVICES WITH OCTAL BUFFERS
SCBS484 – JULY 1994
3–3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions
TERMINAL
NAME
DESCRIPTION
GND
Ground
TCK
Test clock. One of four terminals required by IEEE Standard 1149.1-1990. Test operations of the device are synchronous to
TCK. Data is captured on the rising edge of TCK and outputs change on the falling edge of TCK.
TDI
Test data input. One of four terminals required by IEEE Standard 1149.1-1990. TDI is the serial input for shifting data through
the instruction register or selected data register. An internal pullup forces TDI to a high level if left unconnected.
TDO
Test data output. One of four terminals required by IEEE Standard 1149.1-1990. TDO is the serial output for shifting data
through the instruction register or selected data register.
TMS
Test mode select. One of four terminals required by IEEE Standard 1149.1-1990. TMS directs the device through its TAP
controller states. An internal pullup forces TMS to a high level if left unconnected.
VCC
Supply voltage
1A1–1A4,
2A1–2A4
Normal-function data inputs. See function table for normal-mode logic.
1OE, 2OE
Normal-function output-enable inputs. See function table for normal-mode logic.
1Y1–1Y4,
2Y1–2Y4
Normal-function data outputs. See function table for normal-mode logic.
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相關(guān)PDF資料
PDF描述
SN74ABT8240 Scan Test Devices With Octal Buffers(掃描測(cè)試裝置(帶八緩沖器))
SN54ABT8244 Scan Test Devices With Octal Buffers(掃描測(cè)試裝置(帶八緩沖器))
SN74ABT8244 Scan Test Devices With Octal Buffers(掃描測(cè)試裝置(帶八緩沖器))
SN54ABT828 10-Bit Buffers/Drivers With 3-State Outputs(10位緩沖器/驅(qū)動(dòng)器(三態(tài)輸出))
SN74ABT828 10-Bit Buffers/Drivers With 3-State Outputs(10位緩沖器/驅(qū)動(dòng)器(三態(tài)輸出))
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