Page 1
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
OEBA1
A1
A2
A3
A4
A5
A6
A7
A8
A9
OEBA2
GND
V
CC
B1
B2
B3
B4
B5
B6
B7
B8
B9
OEAB2
OEAB1
SN74ALS29863
9-BIT TRANSCEIVER
WITH 3-STATE OUTPUTS
SDAS096C – JANUARY 1986 – REVISED JANUARY 1995
Copyright 1995, Texas Instruments Incorporated
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
• Functionally Equivalent to AMD’s AM29863
• Power-Up High-Impedance State
• Package Options Include Plastic
Small-Outline (DW) Packages and Standard
Plastic (NT) 300-mil DIPs
description
This 9-bit transceiver is designed for
asynchronous two-way communication between
data buses. The control-function implementation
allows for maximum flexibility in timing.
This device allows data transmission from the
A bus to the B bus or from the B bus to the A bus,
depending on the logic levels at the output-enable
(OEAB1
, OEAB2, OEBA1, and OEBA2) inputs.
The SN74ALS29863 is characterized for
operation from 0°C to 70°C.
FUNCTION TABLE
INPUTS
OEAB1 OEAB2 OEBA1 OEBA2
OPERATION
L L L L Latch A and B
L L H X
L LXH
A
to
B
HXLL
XHLL
B
to
A
HXHX
HXXH
XHXH
Isolation
XHHX
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.
Page 2
SN74ALS29863
9-BIT TRANSCEIVER
WITH 3-STATE OUTPUTS
SDAS096C – JANUARY 1986 – REVISED JANUARY 1995
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbol
†
logic diagram (positive logic)
2
A1
1
11
13
14
B1
23
3
A2
B2
22
4
A3
B3
21
5
A4
B4
20
6
A5
B5
19
7
A6
B6
18
8
A7
B7
17
9
A8
B8
16
10
A9
B9
15
OEBA1
OEBA2
OEAB1
OEAB2
&
&
EN1
2
1
EN2
A1 B1
23
11
OEBA
1
1
2
14
13
OEBA2
OEAB1
OEAB2
To Eight Other Channels
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
‡
Supply voltage, V
CC
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
(all inputs and I/O ports) 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
MIN NOM MAX UNIT
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
Page 3
SN74ALS29863
9-BIT TRANSCEIVER
WITH 3-STATE OUTPUTS
SDAS096C – JANUARY 1986 – REVISED JANUARY 1995
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT
V
IK
VCC = 4.75 V , II = –18 mA –1.2 V
IOH = –15 mA 2.4
V
OH
V
CC
=
4.75 V
IOH = –24 mA 2
V
V
OL
VCC = 4.75 V , IOL = 48 mA 0.35 0.5 V
I
I
VCC = 5.25 V , VI = 5.5 V 0.1 mA
Control inputs
20
I
IH
A or B ports
‡
V
CC
= 5.25 V,
V
I
= 2.7
V
20
µ
A
Control inputs
–0.1
I
IL
A or B ports
‡
V
CC
= 5.25 V,
V
I
= 0.4
V
–0.1
mA
I
OS
§
VCC = 5.25 V , VO = 0 –75 –250 mA
I
CC
VCC = 5.25 V 40 65 mA
†
All typical values are at VCC = 5 V, TA = 25°C.
‡
For I/O ports, the parameters IIH and IIL include the off-state output current.
§
Not more than one output should be shorted at a time and duration of the short circuit should not exceed one second.
switching characteristics (see Figure 1)
FROM TO
VCC = 4.75 V to 5.25 V
PARAMETER
(INPUT) (OUTPUT)
TEST CONDITIONS
MIN MAX
UNIT
t
PLH
15
t
PHL
A or B
B
or
A
C
L
=
300 pF
15
ns
t
PLH
8
t
PHL
A or B
B
or
A
C
L
=
50 pF
8
ns
t
PZH
20
t
PZL
OEAB
or
OEBA
A
or
B
C
L
=
300 pF
23
ns
t
PZH
15
t
PZL
OEAB
or
OEBA
A
or
B
C
L
=
50 pF
15
ns
t
PHZ
17
t
PLZ
OEAB
or
OEBA
A
or
B
C
L
=
50 pF
12
ns
t
PHZ
p
9
t
PLZ
OEAB
or
OEBA
A
or
B
C
L
= 5 p
F
9
ns
Page 4
SN74ALS29863
9-BIT TRANSCEIVER
WITH 3-STATE OUTPUTS
SDAS096C – JANUARY 1986 – REVISED JANUARY 1995
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
LOAD CIRCUIT
R1
1 kΩ
All Diodes
1N916 or 1N3064
From Output
Under Test
Test Point
S2
C
L
(see Note A)
RL = 180 Ω
1.5 V
1.5 V
1.5 V
3 V
3 V
0
0
t
h
t
su
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
Timing Input
Data Input
1.5 V
1.5 V
3 V
3 V
0
0
High-Level
Pulse
Low-Level
Pulse
t
w
VOLTAGE WAVEFORMS
PULSE DURATIONS
1.5 V
1.5 V
t
PHL
t
PLH
t
PLH
t
PHL
Out-of-Phase
Output
1.5 V 1.5 V
1.5 V1.5 V
1.5 V 1.5 V
3 V
0
V
OL
V
OH
V
OH
V
OL
In-Phase
Output
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
t
PHZ
t
PLZ
0.5 V
t
PZL
t
PZH
1.5 V1.5 V
1.5 V
1.5 V
3 V
0
Output
Control
Waveform 1
(see Note B)
Waveform 2
(see Note B)
≈ 0
V
OH
V
OL
≈ 1.5 V
0.5 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
V
CC
S1
SWITCH POSITION TABLE
TEST S1 S2
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Closed
Closed
Open
Closed
Closed
Closed
Closed
Closed
Closed
Open
Closed
Closed
≈ 4.5 V
≈ 1.5 V
Input
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 ≤ 10 MHz, ZO = 50 Ω, tr≤ 2.5 ns, tf≤ 2.5 ns.
Figure 1. Load Circuit and Voltage Waveforms
Page 5
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Copyright 1998, Texas Instruments Incorporated
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