參數(shù)資料
型號(hào)： SN54LVTH18502AHV
廠商： TEXAS INSTRUMENTS INC
元件分類： 總線收發(fā)器
英文描述： LVT SERIES, DUAL 9-BIT BOUNDARY SCAN REG TRANSCEIVER, TRUE OUTPUT, CQFP68
封裝： CERAMIC, QFP-68
文件頁數(shù)： 12/38頁
文件大小： 556K
代理商： SN54LVTH18502AHV
SN54LVTH18502A, SN54LVTH182502A, SN74LVTH18502A, SN74LVTH182502A
3.3-V ABT SCAN TEST DEVICES
WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS
SCBS668B – JULY 1996 – REVISED MARCH 1999
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
Four dedicated test pins are used to observe and control the operation of the test circuitry: test data input (TDI),
test data output (TDO), test mode select (TMS), and test clock (TCK). Additionally, the test circuitry performs
other testing functions such as parallel-signature analysis (PSA) on data inputs and pseudo-random pattern
generation (PRPG) from data outputs. All testing and scan operations are synchronized to the TAP interface.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The B-port outputs of ’LVTH182502A, which are designed to source or sink up to 12 mA, include 25-
series
resistors to reduce overshoot and undershoot.
The SN54LVTH18502A and SN54LVTH182502A are characterized for operation over the full military
temperature range of –55
°C to 125°C. The SN74LVTH18502A and SN74LVTH182502A are characterized for
operation from –40
°C to 85°C.
1B4
1B5
1B6
GND
1B7
1B8
1B9
VCC
NC
2B1
2B2
2B3
2B4
GND
2B5
2B6
2B7
1A3
1A4
1A5
GND
1A6
1A7
1A8
1A9
NC
VCC
2A1
2A2
2A3
GND
2A4
2A5
2A6
V
NC
TMS
1CLKBA
1A2
1A1
1OEAB
GND
1LEAB
1CLKAB
TDO
NC
TCK
2CLKBA
2LEBA
2A9
GND
2OEAB
2LEAB
2CLKAB
TDI
2A7
2A8
1LEBA
1OEBA
GND
2OEBA
2B9
2B8
GND
1B1
1B2
1B3
SN54LVTH18502A, SN54LVTH182502A . . . HV PACKAGE
(TOP VIEW)
CC
V
CC
NC – No internal connection
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
28 29 30 31 32 33 34
87
6
5
4
93
1 68 67
2
35 36 37 38 39
66 65
27
64 63 62 61
40 41 42 43
相關(guān)PDF資料
PDF描述
SN54LVTH182512HKC LVT SERIES, DUAL 9-BIT BOUNDARY SCAN REG TRANSCEIVER, TRUE OUTPUT, CDFP64
SN54LVTH182516HKC LVT SERIES, 18-BIT BOUNDARY SCAN REG TRANSCEIVER, TRUE OUTPUT, CDFP64
SNJ54LVTH18516HKC LVT SERIES, 18-BIT BOUNDARY SCAN REG TRANSCEIVER, TRUE OUTPUT, CDFP64
SNJ54LVTH182516HKC LVT SERIES, 18-BIT BOUNDARY SCAN REG TRANSCEIVER, TRUE OUTPUT, CDFP64
SN54LVTH182646AHV LVT SERIES, DUAL 9-BIT BOUNDARY SCAN REG TRANSCEIVER, TRUE OUTPUT, CQFP68
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SN54S00W 制造商:Rochester Electronics LLC 功能描述:- Bulk
SN54S02J 制造商:Texas Instruments 功能描述:
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