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SN74ACT2440FN Datasheet(PDF) 29 Page - Texas Instruments

Part # SN74ACT2440FN
Description  NuBusE INTERFACE CONTROLLER
PDF  33 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

SN74ACT2440FN Datasheet(HTML) 29 Page - Texas Instruments

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SN74ACT2440
NuBus
™ INTERFACE CONTROLLER
SCHS010 – D3158, OCTOBER 1988 – REVISED JANUARY 1991
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
29
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
PARAMETER
MIN
TYP
MAX
UNIT
fmax
Clock frequency, CLK
10
MHz
NuBus
™ card-slot signals, CL = 300 pF†
PARAMETER
LOAD
MIN
TYP‡
MAX
UNIT
tpd
Propagation delay time, CLK
↑ to START
R1 = 270
Ω, R2 = 470 Ω
20
32
ns
tpd
Propagation delay time, CLK
↑ to ACK
R1 = 270
Ω, R2 = 470 Ω
20
32
ns
tpd
Propagation delay time, CLK
↑ to TMx
R1 = 270
Ω, R2 = 470 Ω
20
32
ns
tpd
Enable time, NMREQ to NMRQ
R1 = 270
Ω, R2 = 470 Ω
20
32
ns
ten
Enable time, CLK
↑ to RQST
R1 = 91
Ω, R2 = 220 Ω
18
32
ns
ten
Enable time, CLK
↑ to START
R1 = 270
Ω, R2 = 470 Ω
18
32
ns
ten
Enable time, CLK
↑ to ACK
R1 = 270
Ω, R2 = 470 Ω
18
32
ns
ten
Enable time, CLK
↑ to TMx
R1 = 270
Ω, R2 = 470 Ω
18
32
ns
ten
Enable time, CLK
↓ to ARBx
R1 = 91
Ω, R2 = 220 Ω
20
35
ns
ten
Enable time, CLK
↑ to SPV
R1 = 270
Ω, R2 = 470 Ω
23
45
ns
NuBus
™ card-slot signals, CL = 50 pF†
PARAMETER
LOAD
MIN
TYP‡
MAX
UNIT
tdis
Disable time, CLK
↑ to RQST
R1 = 91
Ω, R2 = 220 Ω
13
20
ns
tdis
Disable time, CLK
↑ to START
R1 = 270
Ω, R2 = 470 Ω
12
22
ns
tdis
Disable time, CLK
↑ to ACK
R1 = 270
Ω, R2 = 470 Ω
10
18
ns
tdis
Disable time, CLK
↑ to TMx
R1 = 270
Ω, R2 = 470 Ω
10
18
ns
tdis
Disable time, CLK
↑ to ARBx
R1 = 91
Ω, R2 = 220 Ω
13
24
ns
tdis
Disable time, CLK
↑ to SPV
R1 = 270
Ω, R2 = 470 Ω
10
18
ns
† See Parameter Measurement Information for load circuit and voltage waveforms.
‡ All typical values are at VCC = 5 V, TA = 25°C.



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