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參數(shù)資料
| 型號： | TNT4882-BQ |
| 英文描述： | Peripheral Miscellaneous |
| 中文描述： | 周邊雜項(xiàng) |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 165K |
| 代理商： | TNT4882-BQ |
TNT4882
Single-Chip IEEE 488.2 Talker/Listener ASIC
National Instruments
Phone: (512) 794-0100 Fax: (512) 683-9300 info@natinst.com www.natinst.com
10
Generic Mode DC Characteristics
Parameter
Supply voltage
Voltage input low
Voltage input high
Voltage output low
Voltage output high
Supply current
Output current low
DATA15-0, LADCS, DRQ, INTR, RDY1
Output current low
BBUS_OEN, ABUS_OEN, TADCS,
CPUACC, REM, TRIG, DCAS, CIC
FIFO_RDY
Output current low
KEYDQ, KEYRSTN, KEYCLKN
DIO8-1N, IFCN, SRQN, EOIN, ATNN,
RENN, DAVN, NRFDN, NDACN
Output current high
DATA15-0, LADCS, DRQ, INTR, RDY1
Output current high
BBUS_OEN, ABUS_OEN, TADCS,
CPUACC, REM, TRIG, DCAS
FIFO_RDY
Symbol
V
DD
V
IL
V
IH
V
OL
V
OH
I
DD
I
OL
Min
4.75
-0.5
2.0
0.0
2.4
Max
5.25
0.8
V
CC
0.4
V
DD
90
24
Unit
V
V
V
V
V
mA
mA
Notes
50 mA, typical
V
OL
= 0.4 V
I
OL
8
mA
V
OL
= 0.4 V
I
OL
I
OL
4
2
mA
mA
V
OL
= 0.4 V
V
OL
= 0.4 V
I
OL
48
mA
V
OL
= 0.4 V
I
OH
-12
-24
-4
mA
mA
mA
V
OH
= V
DD
-0.5 V
V
OH
= 2.4 V
V
OH
= V
DD
-0.5 V
I
OH
-8
-2
-4
-1
-2
mA
mA
V
OH
= 2.4 V
V
OH
= V
DD
-0.5 V
V
OH
= 2.4 V
V
OH
= V
DD
-0.5 V
V
OH
= 2.4 V
V
OH
= 2.4 V
I
OH
Output current high
KEYDQ, KEYRSTN, KEYCLKN
DIO8-1N, IFCN, SRQN, EOIN, ATNN,
RENN, DAVN, NRFDN, NDACN
Input leakage current – all pins
Output leakage current – all pins
I
OH
mA
mA
mA
I
OH
16
I
IH
I
OZ
±10
±10
μ
A
μ
A
V
DD
= 5.5 V
V
DD
= 5.5 V
Generic Mode Capacitance
Parameter
Pin capacitance
DIO8-1N, RENN, ATNN, IFCN, SRQN, DAVN, EOIN, NDACN, NRFDN
Pin capacitance all other pins
Symbol
C
Min
Typ
Max
50
Unit
pF
Notes
C
3.6
pF
Generic Mode AC Characteristics
Commercial
Min
24
Industrial
Parameter
Address setup to RDN = 0, WRN = 0
Data delay from RDN = 0, CSN = 0 (one-chip mode access)
Data float from RDN = 1
RDN pulsewidth (I/0 access)
RDN recovery width
Address hold from RDN = 1, WRN = 1
DRQ unassertion
Data delay from RDN = 0, DACKN = 0
Data setup to WRN = 1
Data hold from WRN = 1
CSN setup to RDN or WRN
CSN hold from RDN or WRN
DACKN setup to RDN or WRN
DACKN hold from RDN or WRN
RDN or WRN to CPUACC (two-chip mode NAT4882 access only)
RDN or WRN to RDY1 assert
Two-chip mode NAT4882 access
Other accesses
RDN or WRN to RDY1 unassert
WRN pulse width (DMA access)
RDN pulse width (DMA access)
Symbol
t
AS
t
RD
t
DF
t
RW
t
RR
t
AH
t
DU
t
DR
t
WS
t
WH
t
CS
t
CH
t
DS
t
DH
t
CPU
t
ARDY
Max
Min
27
Max
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
71
40
78
44
71
40
0
78
44
0
78
40
86
44
14
0
0
0
0
0
16
0
0
0
0
0
26
29
10
25
22
10
28
25
clock periods
ns
ns
ns
ns
t
URDY
t
WP
t
RP
40
40
44
44
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