320724-01 查看數據表（PDF） - National Instruments Corporation
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320724-01 Datasheet PDF : 16 Pages
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TNT4882
Single-Chip IEEE 488.2 Talker/Listener ASIC
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
VDD
VIL
VIH
VOL
VOH
IDD
IOL
IOL
IOL
IOL
IOL
IOH
IOH
IOH
Min
4.75
-0.5
2.0
0.0
2.4
Output current high
IOH
KEYDQ, KEYRSTN, KEYCLKN
DIO8-1N, IFCN, SRQN, EOIN, ATNN,
IOH
RENN, DAVN, NRFDN, NDACN
Input leakage current – all pins
IIH
Output leakage current – all pins
IOZ
Generic Mode Capacitance
Parameter
Pin capacitance
DIO8-1N, RENN, ATNN, IFCN, SRQN, DAVN, EOIN, NDACN, NRFDN
Pin capacitance all other pins
Symbol
C
C
Generic Mode AC Characteristics
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
t URDY
t WP
t RP
Max
5.25
0.8
VCC
0.4
VDD
90
24
8
4
2
48
-12
-24
-4
-8
-2
-4
-1
-2
16
±10
±10
Min
Typ
Max
50
3.6
Commercial
Min
Max
24
71
40
71
40
0
78
40
14
0
0
0
0
0
26
10
25
22
40
40
Unit
Notes
V
V
V
V
V
mA
50 mA, typical
mA
VOL = 0.4 V
mA
VOL = 0.4 V
mA
VOL = 0.4 V
mA
VOL = 0.4 V
mA
VOL = 0.4 V
mA
VOH = VDD-0.5 V
mA
VOH = 2.4 V
mA
VOH = VDD-0.5 V
mA
VOH = 2.4 V
mA
VOH = VDD-0.5 V
VOH = 2.4 V
mA
VOH = VDD-0.5 V
mA
VOH = 2.4 V
mA
VOH = 2.4 V
µA
VDD = 5.5 V
µA
VDD = 5.5 V
Unit
Notes
pF
pF
Industrial
Min
Max
27
78
44
78
44
0
86
44
16
0
0
0
0
0
29
10
28
25
44
44
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
clock periods
ns
ns
ns
ns
10 National Instruments
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