Texas Instruments 74ACT11245PWR, 74ACT11245PWLE, 74ACT11245NT, 74ACT11245DWR, 74ACT11245DW Datasheet
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74ACT11245 |
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OCTAL BUS TRANSCEIVER |
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WITH 3-STATE OUTPUTS |
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SCAS031C ± JULY 1987 ± REVISED APRIL 1996 |
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D 3-State Outputs Drive Bus Lines Directly |
DB, DW, NT, OR PW PACKAGE |
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D Inputs Are TTL-Voltage Compatible |
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(TOP VIEW) |
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D Flow-Through Architecture Optimizes |
A1 |
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DIR |
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1 |
24 |
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PCB Layout |
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A2 |
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2 |
23 |
B1 |
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D Center-Pin VCC and GND Configurations |
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A3 |
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3 |
22 |
B2 |
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Minimize High-Speed Switching Noise |
A4 |
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4 |
21 |
B3 |
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D |
t |
GND |
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5 |
20 |
B4 |
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EPIC (Enhanced-Performance Implanted |
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CMOS) 1-mm Process |
GND |
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6 |
19 |
VCC |
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D 500-mA Typical Latch-Up Immunity at |
GND |
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7 |
18 |
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VCC |
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125°C |
GND |
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8 |
17 |
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B5 |
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9 |
16 |
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D Package Options Include Plastic |
A5 |
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B6 |
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A6 |
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10 |
15 |
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B7 |
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Small-Outline (DW), Shrink Small-Outline |
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A7 |
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11 |
14 |
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B8 |
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(DB), and Thin Shrink Small-Outline (PW) |
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A8 |
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12 |
13 |
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Packages, and Standard Plastic 300-mil |
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OE |
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DIPs (NT) |
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description
The octal bus transceiver is designed for asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements.
The device allows data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so that the buses are effectively isolated.
The 74ACT11245 is characterized for operation from ±40°C to 85°C.
FUNCTION TABLE
OUTPUT |
DIRECTION |
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ENABLE |
CONTROL |
OUTPUT |
OE |
DIR |
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L |
L |
B data to A bus |
L |
H |
A data to B bus |
H |
X |
Isolation |
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EPIC is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright 1996, Texas Instruments Incorporated
POST OFFICE BOX 655303 •DALLAS, TEXAS 75265 |
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74ACT11245
OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SCAS031C ± JULY 1987 ± REVISED APRIL 1996
logic symbol²
OE |
13 |
G3 |
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DIR |
24 |
3 EN1 [BA] |
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3 EN2 [AB] |
A1 |
1 |
23 |
1 |
B1 |
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2 |
2 |
A2 |
22 |
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3 |
B2 |
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A3 |
21 |
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4 |
B3 |
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A4 |
20 |
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9 |
B4 |
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A5 |
17 |
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10 |
B5 |
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A6 |
16 |
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11 |
B6 |
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A7 |
15 |
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12 |
B7 |
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A8 |
14 |
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B8 |
² This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
DIR 24
13 OE
A1 1
23 B1
2
A2
22 B2
3
A3
21 B3
4
A4
20 B4
9
A5
17 B5
10
A6
16 B6
11
A7
15 B7
12
A8
14 B8
2 |
POST OFFICE BOX 655303 •DALLAS, TEXAS 75265 |
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