SN74AS1008A
QUADRUPLE 2-INPUT POSITIVE-AND BUFFER/DRIVER
SDAS071B – DECEMBER 1982 – REVISED JANUARY 1995
•
•
•
Driver Version of ′AS08
Offers High Capacitive-Drive Capability
Package Options Include Plastic
Small-Outline (D) Packages and Standard
Plastic (N) 300-mil DIPs
D OR N PACKAGE
(TOP VIEW)
1A
1B
1Y
2A
2B
2Y
GND
description
This device contains four independent 2-input
positive-AND buffers/drivers. It performs the
Boolean functions Y = A • B or Y = A + B in positive
logic.
1
14
2
13
3
12
4
11
5
10
6
9
7
8
VCC
4B
4A
4Y
3B
3A
3Y
The SN74AS1008A is characterized for operation
from 0°C to 70°C.
FUNCTION TABLE
(each gate)
INPUTS
A
B
OUTPUT
Y
H
H
H
L
X
L
X
L
L
logic symbol†
1A
1B
2A
2B
3A
3B
4A
4B
1
logic diagram (positive logic)
&
3
2
4
1A
1Y
1B
6
5
2Y
9
10
8
2B
13
3
2
4
6
5
1Y
2Y
3Y
12
11
2A
1
3A
4Y
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
3B
4A
4B
9
8
10
3Y
12
11
13
4Y
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 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.
Copyright 1995, 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
SN74AS1008A
QUADRUPLE 2-INPUT POSITIVE-AND BUFFER/DRIVER
SDAS071B – DECEMBER 1982 – REVISED JANUARY 1995
recommended operating conditions†
VCC
VIH
Supply voltage
VIL
IOH
Low-level input voltage
High-level input voltage
MIN
NOM
MAX
4.5
5
5.5
2
V
V
High-level output current
IOL
Low-level output current
TA
Operating free-air temperature
† This high sink- or source-current device is not recommended for use above 40 MHz.
UNIT
0.8
V
– 48
mA
48
mA
70
°C
0
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
TEST CONDITIONS
MIN
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
II = –18 mA
IOH = – 2 mA
VCC = 4
4.5
5V
IOH = – 3 mA
IOH = – 48 mA
VOL
II
VCC = 4.5 V,
VCC = 5.5 V,
IOL = 48 mA
VI = 7 V
IIH
IIL
IO§
VCC = 5.5 V,
VCC = 5.5 V,
VI = 2.7 V
VI = 0.4 V
VCC = 5.5 V,
VCC = 5.5 V,
VO = 2.25 V
VI = 4.5 V
VCC = 5.5 V,
VI = 0
VOH
ICCH
ICCL
TYP‡
VCC – 2
2.4
MAX
UNIT
–1.2
V
V
3.2
2
0.35
0.5
V
0.1
mA
20
µA
– 0.5
mA
– 200
mA
5.6
9.5
mA
13.5
22
– 50
mA
‡ All typical values are at VCC = 5 V, TA = 25°C.
§ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
switching characteristics (see Figure 1)
PARAMETER
tPLH
tPHL
FROM
(INPUT)
A or B
TO
(OUTPUT)
Y
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500 Ω,
TA = MIN to MAX¶
MIN
MAX
1
6
1
6
¶ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
UNIT
ns
SN74AS1008A
QUADRUPLE 2-INPUT POSITIVE-AND BUFFER/DRIVER
SDAS071B – DECEMBER 1982 – REVISED JANUARY 1995
PARAMETER MEASUREMENT INFORMATION
SERIES 54ALS/74ALS AND 54AS/74AS DEVICES
7V
RL = R1 = R2
VCC
S1
RL
R1
Test
Point
From Output
Under Test
CL
(see Note A)
From Output
Under Test
RL
Test
Point
From Output
Under Test
CL
(see Note A)
CL
(see Note A)
LOAD CIRCUIT FOR
BI-STATE
TOTEM-POLE OUTPUTS
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
3.5 V
Timing
Input
Test
Point
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
3.5 V
High-Level
Pulse
1.3 V
R2
1.3 V
1.3 V
0.3 V
0.3 V
Data
Input
tw
th
tsu
3.5 V
1.3 V
3.5 V
Low-Level
Pulse
1.3 V
0.3 V
1.3 V
0.3 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VOLTAGE WAVEFORMS
PULSE DURATIONS
3.5 V
Output
Control
(low-level
enabling)
1.3 V
1.3 V
0.3 V
tPZL
Waveform 1
S1 Closed
(see Note B)
tPLZ
[3.5 V
1.3 V
tPHZ
tPZH
Waveform 2
S1 Open
(see Note B)
1.3 V
VOL
0.3 V
VOH
1.3 V
0.3 V
[0 V
3.5 V
1.3 V
Input
1.3 V
0.3 V
tPHL
tPLH
VOH
In-Phase
Output
1.3 V
1.3 V
VOL
tPLH
tPHL
VOH
Out-of-Phase
Output
(see Note C)
1.3 V
1.3 V
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
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. When measuring propagation delay items of 3-state outputs, switch S1 is open.
D. All input pulses have the following characteristics: PRR ≤ 1 MHz, tr = tf = 2 ns, duty cycle = 50%.
E. The outputs are measured one at a time with one transition per measurement.
Figure 1. Load Circuits and Voltage Waveforms
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
PACKAGE OPTION ADDENDUM
www.ti.com
13-Aug-2021
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)
SN74AS1008AD
ACTIVE
SOIC
D
14
50
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
AS1008A
SN74AS1008ADE4
ACTIVE
SOIC
D
14
50
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
AS1008A
SN74AS1008AN
ACTIVE
PDIP
N
14
25
RoHS & Green
NIPDAU
N / A for Pkg Type
0 to 70
SN74AS1008AN
(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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