參數(shù)資料
型號(hào)： SN74ABT8952DWG4
廠商： Texas Instruments
文件頁(yè)數(shù)： 4/31頁(yè)
文件大?。?/td> 0K
描述： IC SCAN TEST DEVICE 28SOIC
標(biāo)準(zhǔn)包裝： 20
系列： 74ABT
邏輯類型： 掃描測(cè)試設(shè)備，帶寄存總線收發(fā)器
電源電壓： 4.5 V ~ 5.5 V
位數(shù)： 8
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 28-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 28-SOIC
包裝： 管件
SN54ABT8952, SN74ABT8952
SCAN TEST DEVICES WITH
OCTAL REGISTERED BUS TRANSCEIVERS
SCBS121D – AUGUST 1992 – REVISED JULY 1996
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
control boundary to high impedance
This instruction conforms to the IEEE Standard 1149.1a-1993 HIGHZ instruction. The bypass register is
selected in the scan path. A logic 0 value is captured in the bypass register during Capture-DR. The device
operates in a modified test mode in which all device I/O pins are placed in the high-impedance state, the device
input pins remain operational, and the normal on-chip logic function is performed.
control boundary to 1/0
This instruction conforms to the IEEE Standard 1149.1a-1993 CLAMP instruction. The bypass register is
selected in the scan path. A logic 0 value is captured in the bypass register during Capture-DR. Data in the input
BSCs is applied to the inputs of the normal on-chip logic, while data in the output BSCs is applied to the device
output pins. The device operates in the test mode.
boundary run test
The bypass register is selected in the scan path. A logic 0 value is captured in the bypass register during
Capture-DR. The device operates in the test mode. The test operation specified in the BCR is executed during
Run-Test/Idle. The five test operations decoded by the BCR are: sample inputs/toggle outputs (TOPSIP),
PRPG, PSA, simultaneous PSA and PRPG (PSA/PRPG), and simultaneous PSA and binary count up
(PSA/COUNT).
boundary read
The BSR is selected in the scan path. The value in the BSR remains unchanged during Capture-DR. This
instruction is useful for inspecting data after a PSA operation.
boundary self test
The BSR is selected in the scan path. All BSCs capture the inverse of their current values during Capture-DR.
In this way, the contents of the shadow latches can be read out to verify the integrity of both shift-register and
shadow-latch elements of the BSR. The device operates in the normal mode.
boundary toggle outputs
The bypass register is selected in the scan path. A logic 0 value is captured in the bypass register during
Capture-DR. Data in the shift-register elements of the selected output BSCs is toggled on each rising edge of
TCK in Run-Test/Idle, updated in the shadow latches, and applied to the associated device output pins on each
falling edge of TCK in Run-Test/Idle. Data in the selected input BSCs remains constant and is applied to the
inputs of the normal on-chip logic. Data appearing at the device input pins is not captured in the input BSCs.
The device operates in the test mode.
boundary-control-register scan
The BCR is selected in the scan path. The value in the BCR remains unchanged during Capture-DR. This
operation must be performed before a boundary run test operation to specify which test operation is to be
executed.
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SN74ABT8952DWRE4 功能描述:特定功能邏輯 Device w/Octal Rgstr Bus Transceiver RoHS:否 制造商:Texas Instruments 產(chǎn)品: 系列:SN74ABTH18502A 工作電源電壓:5 V 封裝 / 箱體:LQFP-64 封裝:Tube
SN74ABT8952DWRG4 功能描述:特定功能邏輯 Scan Test Devices RoHS:否 制造商:Texas Instruments 產(chǎn)品: 系列:SN74ABTH18502A 工作電源電壓:5 V 封裝 / 箱體:LQFP-64 封裝:Tube
SN74ABT8996DW 功能描述:特定功能邏輯 10-Bit Add Scan Port /TAP Transceiver RoHS:否 制造商:Texas Instruments 產(chǎn)品: 系列:SN74ABTH18502A 工作電源電壓:5 V 封裝 / 箱體:LQFP-64 封裝:Tube
SN74ABT8996DWR 功能描述:特定功能邏輯 10-Bit Add Scan Port /TAP Transceiver RoHS:否 制造商:Texas Instruments 產(chǎn)品: 系列:SN74ABTH18502A 工作電源電壓:5 V 封裝 / 箱體:LQFP-64 封裝:Tube
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