Texas Instruments SN74ALS29827DW, SN74ALS29827DWR, SN74ALS29827NT, SN74ALS29828DW, SN74ALS29828DWR Datasheet
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DW OR NT PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
OE1
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
GND
V
CC
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
Y10
OE2
SN74ALS29827, SN74ALS29828
10-BIT BUFFERS AND BUS DRIVERS
WITH 3-STATE OUTPUTS
SDAS095B – JANUARY 1986 – REVISED JANUARY 1995
Copyright 1995, Texas Instruments Incorporated
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
• Functionally Equivalent to AMD’s AM29827
and AM29828
• 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
• pnp Inputs Reduce dc Loading
• Data Flow-Through Pinout (All Inputs on
Opposite Side From Outputs)
• Power-Up High-Impedance State
• Package Options Include Plastic
Small-Outline (DW) Packages and Standard
Plastic (NT) 300-mil DIPs
description
These 10-bit buffers and bus drivers provide
high-performance bus interface for wide data
paths or buses carrying parity.
The 3-state control gate is a 2-input NOR such that if either output-enable (OE1
or OE2) input is high, all
ten outputs are in the high-impedance state.
The SN74ALS29827 provides true data and the SN74ALS29828 provides inverted data at their respective
outputs.
The SN74ALS29827 and SN74ALS29828 are characterized for operation from 0°C to 70°C.
logic symbols
†
2
A1
3
A2
4
A3
5
A4
6
A5
Y1
23
Y2
22
Y3
21
Y4
20
Y5
19
Y6
18
Y7
17
Y8
16
7
A6
8
A7
9
A8
13
1
OE1
OE2
EN
&
Y9
15
Y10
14
10
A9
11
A10
13
2
A1
3
A2
4
A3
5
A4
6
A5
Y1
23
Y2
22
Y3
21
Y4
20
Y5
19
Y6
18
Y7
17
Y8
16
7
A6
8
A7
9
A8
EN
&
OE2
1
OE1
10
A9
11
A10
Y9
15
Y10
14
SN74ALS29827 SN74ALS29828
†
These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
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.
SN74ALS29827, SN74ALS29828
10-BIT BUFFERS AND BUS DRIVERS
WITH 3-STATE OUTPUTS
SDAS095B – JANUARY 1986 – REVISED JANUARY 1995
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic diagrams (positive logic)
Y1
To Nine Other Channels
OE1
OE2
A1
223
13
1
To Nine Other Channels
OE2
OE1
A1
1
13
2
23
Y1
SN74ALS29827 SN74ALS29828
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, V
CC
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage applied to a disabled 3-state output 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
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
SN74ALS29827
SN74ALS29828
UNIT
MIN NOM MAX
V
CC
Supply voltage 4.75 5 5.25 V
V
IH
High-level input voltage 2 V
V
IL
Low-level input voltage 0.8 V
I
OH
High-level output current –24 mA
I
OL
Low-level output current 48 mA
T
A
Operating free-air temperature 0 70 °C
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