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SN54ALS805A, SN54AS805B, SN74ALS805A, SN74AS805B
HEX 2ĆINPUT NOR DRIVERS
ą
SDAS023C − DECEMBER 1982 − REVISED JANUARY 1995
High Capacitive-Drive Capability
ALS805A Has Typical Delay Time of 4.2 ns
(CL = 50 pF) and Typical Power Dissipation
of 4.2 mW Per Gate
AS805B Has Typical Delay Time of 2.6 ns
(CL = 50 pF) and Typical Power Dissipation
of 12 mW Per Gate
Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
description
SN54ALS805A, SN54AS805B . . . J PACKAGE
SN74ALS805A, SN74AS805B . . . DW OR N PACKAGE
(TOP VIEW)
1A
1B
1Y
2A
2B
2Y
3A
3B
3Y
GND
1
2
3
4
5
6
7
8
9
10
20 VCC
19 6B
18 6A
17 6Y
16 5B
15 5A
14 5Y
13 4B
12 4A
11 4Y
These devices contain six independent 2-input
NOR drivers. They perform the Boolean functions
Y = A + B or Y = A B in positive logic.
SN54ALS805A, SN54AS805B . . . FK PACKAGE
(TOP VIEW)
The SN54ALS805A and SN54AS805B are
characterized for operation over the full military
temperature range of − 55°C to 125°C. The
SN74ALS805A and SN74AS805B are
characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each driver)
INPUTS
AB
OUTPUT
Y
HX
L
XH
L
LL
H
2A
3 2 1 20 19
4 18
6A
2B 5
17 6Y
2Y 6
16 5B
3A 7
15 5A
3B 8
14 5Y
9 10 11 12 13
logic symbol
1
1A
2
1B
4
2A
5
2B
7
3A
8
3B
12
4A
13
4B
15
5A
16
5B
18
6A
19
6B
1
3
1Y
6
2Y
9
3Y
11
4Y
14
5Y
17
6Y
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
logic diagram (positive logic)
1
1A
2
1B
4
2A
5
2B
7
3A
8
3B
12
4A
13
4B
15
5A
16
5B
18
6A
19
6B
3
1Y
6
2Y
9
3Y
11
4Y
14
5Y
17
6Y
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 1995, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
1

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SN54ALS805A, SN54AS805B, SN74ALS805A, SN74AS805B
HEX 2ĆINPUT NOR DRIVERS
ą
SDAS023C − DECEMBER 1982 − REVISED JANUARY 1995
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: SN54ALS805A . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C
SN74ALS805A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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.
recommended operating conditions
VCC
VIH
VIL
IOH
IOL
TA
Supply voltage
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Operating free-air temperature
SN54ALS805A
MIN NOM MAX
4.5 5 5.5
2
0.7
− 12
12
−55 125
SN74ALS805A
MIN NOM MAX
4.5 5 5.5
2
0.8
− 15
24
0 70
UNIT
V
V
V
mA
mA
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS805A
MIN TYP‡ MAX
SN74ALS805A
MIN TYP‡ MAX UNIT
VIK VCC = 4.5 V,
II = −18 mA
−1.2 −1.2 V
VCC = 4.5 V to 5.5 V,
IOH = − 0.4 mA
VCC − 2
VCC − 2
VOH
VCC = 4.5 V
IOH = − 3 mA
IOH = − 12 mA
2.4 3.2
2
2.4 3.2
V
IOH = − 15 mA
2
VOL
VCC = 4.5 V
IOL = 12 mA
IOL = 24 mA
0.25 0.4
0.25 0.4
V
0.35 0.5
II VCC = 5.5 V,
VI = 7 V
0.1 0.1 mA
IIH VCC = 5.5 V,
VI = 2.7 V
20 20 µA
IIL VCC = 5.5 V,
IO§ VCC = 5.5 V,
VI = 0.4 V
VO = 2.25 V
− 0.1
−0.1 mA
−20 −112 −30 −112 mA
ICCH
VCC = 5.5 V,
VI = 0
24
2 4 mA
ICCL
VCC = 5.5 V,
VI = 4.5 V
8 14
8 14 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.
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443

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SN54ALS805A, SN54AS805B, SN74ALS805A, SN74AS805B
HEX 2ĆINPUT NOR DRIVERS
ą
SDAS023C − DECEMBER 1982 − REVISED JANUARY 1995
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500 ,
TA = MIN to MAX†
SN54ALS805A SN74ALS805A
MIN MAX MIN MAX
tPLH
tPHL
A or B
1 12
Y
19
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
2
2
7
8
UNIT
ns
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: SN54AS805B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C
SN74AS805B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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.
recommended operating conditions§
SN54AS805B
MIN NOM MAX
VCC Supply voltage
4.5
VIH High-level input voltage
2
VIL Low-level input voltage
IOH High-level output current
IOL Low-level output current
TA Operating free-air temperature
− 55
§ These high sink- or source-current devices are not recommended for use above 40 MHz.
5 5.5
0.8
− 40
40
125
SN74AS805B
MIN NOM MAX
4.5 5 5.5
2
0.8
− 48
48
0 70
UNIT
V
V
V
mA
mA
°C
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
3

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SN54ALS805A, SN54AS805B, SN74ALS805A, SN74AS805B
HEX 2ĆINPUT NOR DRIVERS
ą
SDAS023C − DECEMBER 1982 − REVISED JANUARY 1995
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54AS805B
MIN TYP† MAX
SN74AS805B
MIN TYP† MAX UNIT
VIK VCC = 4.5 V,
II = −18 mA
−1.2 −1.2 V
VCC = 4.5 V to 5.5 V,
IOH = − 2 mA
VCC − 2
VCC − 2
VOH
VCC = 4.5 V
IOH = − 3 mA
IOH = − 40 mA
2.4 3.2
2
2.4 3.2
V
IOH = − 48 mA
2
VOL
VCC = 4.5 V
IOL = 40 mA
IOL = 48 mA
0.25 0.5
V
0.35 0.5
II VCC = 5.5 V,
VI = 7 V
0.1 0.1 mA
IIH VCC = 5.5 V,
VI = 2.7 V
20 20 µA
IIL VCC = 5.5 V,
IO‡ VCC = 5.5 V,
VI = 0.4 V
VO = 2.25 V
− 0.5
−0.5 mA
−50 −200 −50 −200 mA
ICCH
VCC = 5.5 V,
VI = 0
6.5 10
6.5 10 mA
ICCL
VCC = 5.5 V,
VI = 4.5 V
20 32
20 32 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
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500 ,
TA = MIN to MAX§
SN54AS805B SN74AS805B
MIN MAX MIN MAX
tPLH
tPHL
A or B
1 4.8
Y
1 4.8
§ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
1
1
4.3
4.3
UNIT
ns
4 POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443

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From Output
Under Test
CL
(see Note A)
SN54ALS805A, SN54AS805B, SN74ALS805A, SN74AS805B
HEX 2ĆINPUT NOR DRIVERS
ą
SDAS023C − DECEMBER 1982 − REVISED JANUARY 1995
PARAMETER MEASUREMENT INFORMATION
SERIES 54ALS/74ALS AND 54AS/74AS DEVICES
VCC
Test
Point
RL
From Output
Under Test
CL
(see Note A)
RL
Test
Point
From Output
Under Test
CL
(see Note A)
7V
RL = R1 = R2
S1
R1
Test
Point
R2
LOAD CIRCUIT FOR
BI-STATE
TOTEM-POLE OUTPUTS
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
Timing
Input
Data
Input
tsu
1.3 V
th
1.3 V
1.3 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3.5 V
0.3 V
3.5 V
0.3 V
High-Level
Pulse
Low-Level
Pulse
1.3 V
tw
1.3 V
1.3 V
1.3 V
VOLTAGE WAVEFORMS
PULSE DURATIONS
3.5 V
0.3 V
3.5 V
0.3 V
Output
Control
(low-level
enabling)
tPZL
Waveform 1
S1 Closed
(see Note B)
tPZH
Waveform 2
S1 Open
(see Note B)
1.3 V
1.3 V
tPHZ
1.3 V
1.3 V
tPLZ
3.5 V
0.3 V
[3.5 V
VOL
0.3 V
VOH
0.3 V
[0 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
Input
tPLH
In-Phase
Output
tPHL
Out-of-Phase
Output
(see Note C)
1.3 V
1.3 V
1.3 V
1.3 V
3.5 V
0.3 V
tPHL
VOH
1.3 V
VOL
tPLH
VOH
1.3 V
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
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
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
5