參數(shù)資料
型號(hào)： SN74LVT8980FK
廠商： Texas Instruments, Inc.
英文描述： EMBEDDED TEST-BUS CONTROLLERS IEEE STD 1149.1 JTAG TAP MASTERS WITH 8-BIT GENERIC HOST INTERFACES
中文描述： 嵌入式測(cè)試總線控制器IEEE標(biāo)準(zhǔn)1149.1 JTAG接口，8咨詢大師比特通用主機(jī)接口
文件頁(yè)數(shù)： 26/34頁(yè)
文件大小： 495K
代理商： SN74LVT8980FK
SN54LVT8980, SN74LVT8980
EMBEDDED TEST-BUS CONTROLLERS
IEEE STD 1149.1 (JTAG) TAP MASTERS WITH 8-BIT GENERIC HOST INTERFACES
SCBS676C – DECEMBER 1996 – REVISED AUGUST 1997
26
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
Input voltage range, V
I
(see Note 1)
Voltage range applied to any output in the high or power-off state, V
O
(see Note 1): D, RDY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TCK, TDO, TMS, TRST
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state, I
O
: SN54LVT8980 (D, RDY)
SN54LVT8980 (TCK, TDO, TMS, TRST)
SN74LVT8980 (D, RDY)
SN74LVT8980 (TCK, TDO, TMS, TRST)
Current into any output in the high state, I
O
(see Note 2): SN54LVT8980 (D, RDY)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN54LVT8980 (TCK, TDO, TMS, TRST)
SN74LVT8980 (D, RDY)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74LVT8980 (TCK, TDO, TMS, TRST)
Input clamp current, I
IK
(V
I
< 0)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
> V
CC
): D, RDY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θ
JA
(see Note 3): DW package
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. This current flows only when the output is in the high state and VO > VCC.
3. The package thermal impedance is calculated in accordance with JESD 51.
–0.5 V to 4.6 V
–0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–0.5 V to V
CC
+ 0.5 V
–0.5 V to 7 V
12 mA
96 mA
12 mA
128 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .
16 mA
48 mA
16 mA
64 mA
–50 mA
–50 mA
50 mA
81
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–65
°
C to 150
°
C
recommended operating conditions (see Note 4)
SN54LVT8980
MIN
SN74LVT8980
MIN
UNIT
MAX
MAX
VCC
VIH
VIL
VI
Supply voltage
2.7
3.6
2.7
3.6
V
High-level input voltage
2
2
V
Low-level input voltage
0.8
0.8
V
Input voltage
5.5
5.5
V
IOH
High level output current
High-level output current
D, RDY
–8
–8
mA
TCK, TDO, TMS, TRST
–24
–32
IOL
Low level output current
Low-level output current
D, RDY
6
6
mA
TCK, TDO, TMS, TRST
48
64
t/
v
t/
VCC
TA
NOTE 4: Unused control inputs (A, CLKIN, R/W) must be held high or low to prevent them from floating.
Input transition rise or fall rate
10
10
ns/V
μ
s/V
°
C
Power-up ramp rate
200
200
Operating free-air temperature
–55
125
–40
85
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
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