74ACT11257
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
WITH 3-STATE OUTPUTS
SCAS053B − JANUARY 1989 − REVISED APRIL 1996
D Inputs Are TTL-Voltage Compatible
D 3-State Outputs Interface Directly With
DB, DW, OR N PACKAGE
(TOP VIEW)
System Bus
A /B
1Y
2Y
GND
GND
GND
GND
3Y
4Y
OE
D Flow-Through Architecture Optimizes
D
D
D
D
D
PCB Layout
Center-Pin VCC and GND Configurations
Minimize High-Speed Switching Noise
EPICt (Enhanced-Performance Implanted
CMOS) 1-mm Process
500-mA Typical Latch-Up Immunity at
125°C
Provides Bus Interface From Multiple
Sources in High-Performance Systems
Package Options Include Plastic
Small-Outline (DW) and Shrink
Small-Outline (DB) Packages, and Standard
Plastic 300-mil DIPs (N)
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
1A
1B
2A
2B
VCC
VCC
3A
3B
4A
4B
description
The 74ACT11257 is designed to multiplex signals from 4-bit data sources to four output data lines in
bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (OE) input is at
a high logic level.
The 74ACT11257 is characterized for operation from −40°C to 85°C.
FUNCTION TABLE
INPUTS
OUTPUT
Y
DATA
OE
SELECT
A/B
A
B
H
X
X
X
L
L
L
X
L
L
L
H
X
H
L
H
X
L
L
L
H
X
H
H
Z
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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
74ACT11257
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
WITH 3-STATE OUTPUTS
SCAS053B − JANUARY 1989 − REVISED APRIL 1996
logic symbol†
OE
A/B
1A
1B
2A
2B
3A
3B
4A
4B
†
10
1
20
19
18
EN
G1
1
MUX
2
1Y
1
3
17
14
8
13
12
9
11
2Y
3Y
4Y
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
OE
A/B
1A
1B
2A
2B
3A
3B
4A
4B
2
10
1
20
2
1Y
19
18
3
2Y
17
14
8
3Y
13
12
9
11
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
4Y
74ACT11257
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
WITH 3-STATE OUTPUTS
SCAS053B − JANUARY 1989 − REVISED APRIL 1996
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to VCC + 0.5 V
Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to VCC + 0.5 V
Input clamp current, IIK (VI < 0 or VI > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100 mA
Maximum power dissipation at TA = 55°C (in still air) (see Note 2): DB package . . . . . . . . . . . . . . . . . . . 0.6 W
DW package . . . . . . . . . . . . . . . . . . 1.6 W
N package . . . . . . . . . . . . . . . . . . . . 1.3 W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
†
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 N package, which has a trace length of zero.
recommended operating conditions
VCC
Supply voltage
VIH
High-level input voltage
VIL
Low-level input voltage
VI
Input voltage
VO
Output voltage
IOH
High-level output current
IOL
Low-level output current
Dt/Dv
Input transition rise or fall rate
TA
Operating free-air temperature
MIN
MAX
4.5
5.5
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
UNIT
V
V
0.8
V
0
VCC
V
0
VCC
V
−24
mA
24
mA
0
10
ns/V
−40
85
°C
3
74ACT11257
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
WITH 3-STATE OUTPUTS
SCAS053B − JANUARY 1989 − REVISED APRIL 1996
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETERS
TEST CONDITIONS
VCC
IOH = −50
50 mA
A
VOH
24 mA
IOH = −24
IOH = −75 mA{
TYP
MAX
IOL = 24 mA
MIN
4.5 V
4.4
4.4
5.5 V
5.4
5.4
4.5 V
3.94
3.8
5.5 V
4.94
4.8
5.5 V
IOL = 50 mA
A
VOL
TA = 25°C
MIN
MAX
UNIT
V
3.85
4.5 V
0.1
5.5 V
0.1
0.1
0.1
4.5 V
0.36
0.44
5.5 V
0.36
0.44
V
IOL = 75 mA{
5.5 V
IOZ
VO = VCC or GND
5.5 V
±0.5
±5
mA
II
VI = VCC or GND
5.5 V
±0.1
±1
mA
ICC
VI = VCC or GND,
IO = 0
5.5 V
8
80
mA
DICC‡
One input at 3.4 V,
Other inputs at VCC or GND
5.5 V
0.9
1
mA
Ci
VI = VCC or GND
5V
3.5
pF
Co
VO = VCC or GND
5V
8
pF
1.65
†
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
‡ This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V to V .
CC
switching characteristics over recomended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 1)
PARAMETER
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
FROM
(INPUT)
TO
(OUTPUT)
A or B
Y
A /B
Any Y
OE
Any Y
OE
Any Y
TA = 25°C
MIN
MAX
6.4
1.5
6.9
8
1.5
8.7
4.7
7.6
1.5
8.2
1.5
5.7
8.5
1.5
9.4
1.5
4.2
6.9
1.5
7.3
1.5
5.5
8.7
1.5
9.6
1.5
5.7
7.6
1.5
8.4
1.5
6
7.9
1.5
8.5
MIN
TYP
MAX
1.5
4.4
1.5
5
1.5
UNIT
ns
ns
ns
ns
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER
TEST CONDITIONS
Outputs enabled
Cpd
4
Power dissipation capacitance
Outputs disabled
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TYP
UNIT
41
pF
CL = 50 pF,
f = 1 MHz
13
pF
74ACT11257
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
WITH 3-STATE OUTPUTS
SCAS053B − JANUARY 1989 − REVISED APRIL 1996
PARAMETER MEASUREMENT INFORMATION
2 × VCC
S1
500 Ω
From Output
Under Test
Open
GND
CL = 50 pF
(see Note A)
TEST
S1
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
2 × VCC
GND
500 Ω
LOAD CIRCUIT
3V
Input
1.5 V
1.5 V
0V
tPHL
tPLH
VOH
In-Phase
Output
50% VCC
50% VCC
VOL
VOH
50% VCC
50% VCC
VOL
3V
Output
Waveform 2
S1 at GND
(see Note B)
1.5 V
1.5 V
0V
tPZL
tPLZ
Output
Waveform 1
S1 at 2 × VCC
(see Note B)
tPLH
tPHL
Out-of-Phase
Output
Output
Control
(low-level
enabling)
50% VCC
20% VCC
VOL
tPHZ
tPZH
VOLTAGE WAVEFORMS
[ VCC
50% VCC
80% VCC
VOH
[0V
VOLTAGE WAVEFORMS
NOTES: A. CL includes probe and jig capacitance.
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, ZO = 50 Ω, tr = 3 ns, tf = 3 ns.
D. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
74ACT11257DW
ACTIVE
SOIC
DW
20
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ACT11257
74ACT11257DWR
ACTIVE
SOIC
DW
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ACT11257
(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)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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