74AC11245DWR [TI]
OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS;
| 型号： | 74AC11245DWR |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS 光电二极管 输出元件 逻辑集成电路 触发器 |
| 文件： | 总12页 (文件大小：334K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
74AC11245
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCAS010B – JULY 1987 – REVISED APRIL 1996
DB, DW, NT, OR PW PACKAGE
(TOP VIEW)
3-State Outputs Drive Bus Lines Directly
Flow-Through Architecture Optimizes
PCB Layout
1
24
23
22
21
20
19
18
17
16
15
14
13
A1
A2
DIR
B1
B2
B3
B4
Center-Pin V
Minimize High-Speed Switching Noise
and GND Configurations
2
CC
3
A3
4
A4
EPIC (Enhanced-Performance Implanted
CMOS) 1- m Process
5
GND
GND
GND
GND
A5
6
V
V
CC
CC
500-mA Typical Latch-Up Immunity at
125°C
7
8
B5
B6
B7
B8
OE
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages, and Standard Plastic 300-mil
DIPs (NT)
9
10
11
12
A6
A7
A8
description
This octal bus transceiver is designed for asynchronous two-way communication between data buses. The
control-function implementation minimizes external timing requirements.
The device allows noninverted 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 74AC11245 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
OUTPUT
ENABLE
OE
DIRECTION
CONTROL
DIR
OPERATION
L
L
L
H
X
B data to A bus
A data to B bus
Isolation
H
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.
Copyright 1996, 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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
74AC11245
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCAS010B – JULY 1987 – REVISED APRIL 1996
†
logic symbol
13
24
OE
G3
DIR
3 EN1 [BA]
3 EN2 [AB]
1
23
B1
A1
1
2
2
22
21
20
17
16
15
14
B2
B3
B4
B5
B6
B7
B8
A2
A3
A4
A5
A6
A7
A8
3
4
9
10
11
12
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
24
1
DIR
A1
A2
A3
A4
A5
A6
A7
A8
13
23
22
21
20
17
16
15
14
OE
B1
B2
B3
B4
B5
B6
B7
B8
2
3
4
9
10
11
12
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
74AC11245
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCAS010B – JULY 1987 – REVISED APRIL 1996
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
CC
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
+ 0.5 V
+ 0.5 V
I
CC
CC
Output voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
O
Input clamp current, I (V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
IK
I
I
CC
Output clamp current, I
(V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
OK
O O CC
Continuous output current, I (V = 0 to V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through V
Maximum power dissipation at T = 55°C (in still air) (see Note 2): DB package . . . . . . . . . . . . . . . . . . 0.65 W
O
O
CC
CC
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±200 mA
A
DW package . . . . . . . . . . . . . . . . . . 1.7 W
NT package . . . . . . . . . . . . . . . . . . . 1.3 W
PW package . . . . . . . . . . . . . . . . . . . 0.7 W
Storage temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
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. The maximum package power dissipation is calculated using a junction temperature of 150 C and a board trace length of 750 mils,
except for the NT package, which has a trace length of zero.
recommended operating conditions
MIN NOM
MAX
UNIT
V
Supply voltage
3
2.1
5
5.5
V
CC
IH
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 3 V
V
High-level input voltage
= 4.5 V
= 5.5 V
= 3 V
3.15
3.85
V
V
0.9
1.35
1.65
V
IL
Low-level input voltage
= 4.5 V
= 5.5 V
V
V
Input voltage
0
0
V
V
V
I
CC
Output voltage
V
CC
–4
O
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 3 V
I
High-level output current
Low-level output current
= 4.5 V
= 5.5 V
= 3 V
–24
–24
12
mA
mA
OH
I
= 4.5 V
= 5.5 V
24
OL
24
t/ v
Input transition rise or fall rate
Operating free-air temperature
0
10
ns/V
T
–40
85
°C
A
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
74AC11245
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCAS010B – JULY 1987 – REVISED APRIL 1996
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
A
= 25°C
PARAMETER
TEST CONDITIONS
V
MIN
MAX
UNIT
CC
MIN
2.9
TYP
MAX
3 V
2.9
4.4
I
= –50
A
4.5 V
5.5 V
3 V
4.4
OH
5.4
5.4
V
OH
I
I
I
= –4 mA
2.58
3.94
4.94
2.48
3.8
V
OH
OH
OH
4.5 V
5.5 V
5.5 V
3 V
= –24 mA
= –75 mA
4.8
3.85
0.1
0.1
0.1
0.1
I
= 50
A
4.5 V
5.5 V
3 V
OL
0.1
0.1
V
OL
I
I
I
= 12 mA
= 24 mA
= 75 mA
0.36
0.36
0.36
0.44
0.44
0.44
1.65
±5
V
OL
OL
OL
4.5 V
5.5 V
5.5 V
‡
A or B ports
OE or DIR
±0.5
±0.1
8
I
I
V
= V
O CC
or GND
5.5 V
A
I
±1
V = V
or GND,
or GND
I = 0
O
5.5 V
5 V
80
A
pF
pF
CC
I
CC
CC
C
C
V = V
4
i
I
V
= V or GND
CC
5 V
12
io
O
†
‡
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
For I/O ports, the parameter I includes the input leakage current.
OZ
switching characteristics over recommended operating free-air temperature range,
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
V
CC
T
A
= 25°C
TYP
6.5
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
MIN
MAX
UNIT
ns
MIN
1.5
1.5
1.5
1.5
1.5
1.5
MAX
11.2
8.5
t
t
t
t
t
t
1.5
1.5
1.5
1.5
1.5
1.5
12.5
9.7
PLH
PHL
PZH
PZL
PHZ
PLZ
A or B
B or A
B or A
B or A
5.7
8.6
14.2
11.5
10.5
12
15.9
12.7
11.3
13
ns
OE
OE
8.2
7.7
ns
8.5
switching characteristics over recommended operating free-air temperature range,
V
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
CC
T
A
= 25°C
TYP
4.8
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
MIN
MAX
UNIT
ns
MIN
1.5
1.5
1.5
1.5
1.5
1.5
MAX
8.5
t
t
t
t
t
t
1.5
1.5
1.5
1.5
1.5
1.5
9.5
6.9
PLH
PHL
PZH
PZL
PHZ
PLZ
A or B
B or A
B or A
B or A
4.1
6.3
6.2
10.2
8.6
11.4
9.5
ns
OE
OE
5.9
6.4
8.8
9.5
ns
7
9.6
10.4
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
74AC11245
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCAS010B – JULY 1987 – REVISED APRIL 1996
operating characteristics, V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
TYP
64
UNIT
Outputs enabled
Outputs disabled
C
Power dissipation capacitance per transceiver
C
= 50 pF,
L
f = 1 MHz
pF
pd
16
PARAMETER MEASUREMENT INFORMATION
2 × V
CC
Open
GND
TEST
S1
S1
t
/t
Open
500 Ω
PLH PHL
From Output
Under Test
t
/t
2 × V
CC
GND
PLZ PZL
t
/t
PHZ PZH
C
= 50 pF
L
500 Ω
(see Note A)
Output
Control
(low-level
enabling)
V
CC
LOAD CIRCUIT
50%
50%
0 V
t
PZL
V
t
CC
PLZ
Output
Waveform 1
V
CC
Input
50%
50%
50% V
CC
0 V
20% V
S1 at 2 × V
(see Note B)
CC
CC
CC
V
V
OL
t
PLH
t
PHZ
t
PHL
t
PZH
Output
Waveform 2
S1 at GND
V
OH
OH
0 V
80% V
50% V
50% V
Output
CC
CC
V
50% V
CC
OL
(see Note B)
VOLTAGE WAVEFORMS
C includes probe and jig capacitance.
L
VOLTAGE WAVEFORMS
NOTES: A.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, Z = 50 Ω, t = 3 ns, t = 3 ns.
O
r
f
D. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com
12-Jan-2006
PACKAGING INFORMATION
Orderable Device
Status (1)
Package Package
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
Type
SSOP
SSOP
SOIC
Drawing
74AC11245DBLE
74AC11245DBR
74AC11245DW
OBSOLETE
OBSOLETE
ACTIVE
DB
24
24
24
TBD
TBD
Call TI
Call TI
Call TI
Call TI
DB
DW
25 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
74AC11245DWE4
74AC11245DWR
74AC11245DWRE4
74AC11245NSR
74AC11245NSRE4
74AC11245NT
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
SOIC
SOIC
SOIC
SO
DW
DW
DW
NS
NS
NT
24
24
24
24
24
24
24
24
25 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
SO
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
PDIP
PDIP
15
Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type
74AC11245NTE4
74AC11245PWLE
NT
15
Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type
OBSOLETE TSSOP
PW
TBD
Call TI
Call TI
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 1
MECHANICAL DATA
MPDI004 – OCTOBER 1994
NT (R-PDIP-T**)
PLASTIC DUAL-IN-LINE PACKAGE
24 PINS SHOWN
A
PINS **
24
28
DIM
24
13
1.260
(32,04) (36,20)
1.425
A MAX
1.230
(31,24) (35,18)
1.385
A MIN
B MAX
B MIN
0.280 (7,11)
0.250 (6,35)
0.310
(7,87)
0.315
(8,00)
1
12
0.290
(7,37)
0.295
(7,49)
0.070 (1,78) MAX
B
0.020 (0,51) MIN
0.200 (5,08) MAX
Seating Plane
0.125 (3,18) MIN
0.100 (2,54)
0.010 (0,25)
0°–15°
0.021 (0,53)
0.015 (0,38)
M
0.010 (0,25) NOM
4040050/B 04/95
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001
DB (R-PDSO-G**)
PLASTIC SMALL-OUTLINE
28 PINS SHOWN
0,38
0,22
0,65
28
M
0,15
15
0,25
0,09
5,60
5,00
8,20
7,40
Gage Plane
1
14
0,25
A
0°–ā8°
0,95
0,55
Seating Plane
0,10
2,00 MAX
0,05 MIN
PINS **
14
16
20
24
28
30
38
DIM
6,50
5,90
6,50
5,90
7,50
8,50
7,90
10,50
9,90
10,50 12,90
A MAX
A MIN
6,90
9,90
12,30
4040065 /E 12/01
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-150
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999
PW (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
14 PINS SHOWN
0,30
0,19
M
0,10
0,65
14
8
0,15 NOM
4,50
4,30
6,60
6,20
Gage Plane
0,25
1
7
0°–8°
A
0,75
0,50
Seating Plane
0,10
0,15
0,05
1,20 MAX
PINS **
8
14
16
20
24
28
DIM
3,10
2,90
5,10
4,90
5,10
4,90
6,60
6,40
7,90
9,80
9,60
A MAX
A MIN
7,70
4040064/F 01/97
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-153
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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