SN54BCT29862B, SN74BCT29862B
10-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS014B – NOVEMBER 1988 – REVISED NOVEMBER 1993
Copyright 1993, Texas Instruments Incorporated
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
•BiCMOS Design Substantially Reduces
Standby Current
•Functionally Equivalent to ′ALS29862 and
AMD Am29862A
•Power-Up High-Impedance State
•ESD Protection Exceeds 2000 V
Per Mil-STD-883C, Method 3015
•Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK) and Flatpacks (W), and
Standard Plastic and Ceramic 300-mil DIPs
(JT, NT)
description
These 10-bit bus transceivers are designed for
asynchronous communication between data
buses. The control-function implementation
allows for maximum flexibility in timing.
These devices allow data transmission from the A
bus to the B bus or from the B bus to the A bus,
depending upon the logic levels at the
output-enable (OEBA and OEAB) inputs.
The outputs are in the high-impedance state
during power-up and power-down conditions. The
outputs remain in the high-impedance state while
the device is powered-down.
The SN54BCT29862B is characterized for
operation over the full military temperature range
of –55°C to 125°C. The SN74BCT29862B is
characterized for operation from 0°C to 70°C.
FUNCTION TABLE
INPUTS
OPERATION
OEAB OEBA
OPERATION
L H A to B
HLB to A
H H Isolation
L L Latch A and B
(A = B)
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
OEBA
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
GND
VCC
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
OEAB
SN54BCT29862B . . . JT OR W PACKAGE
SN74BCT29862B . . . DW OR NT PACKAGE
(TOP VIEW)
321
13 14
5
6
7
8
9
10
11
B3
B4
B5
NC
B6
B7
B8
A3
A4
A5
NC
A6
A7
A8
4
15 16 17 18
A10
GND
NC
OEAB
B10
B9
A2
A1
OEBA
NC
SN54BCT29862B . . . FK PACKAGE
(TOP VIEW)
28 27 2625
24
23
22
21
20
19
12
A9
B1
B2
NC-No internal connection
VCC
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.
SN54BCT29862B, SN74BCT29862B
10-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS014B – NOVEMBER 1988 – REVISED NOVEMBER 1993
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbol†logic diagram (positive logic)
A1 B1
23
OEBA
1
2
13
OEAB
2
A1 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
OEBA
OEAB
EN1
2
1
EN2
11
A10 B10
14
13
1
To Nine Other Channels
†This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
Pin numbers shown are for the DW, JT, NT, and W packages.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡
Supply voltage, VCC –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage (I/O ports) (see Note 1) –0.5 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage (excluding I/O ports) (see Note 1) –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage applied to any output in the high state –0.5 V to VCC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current –30 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state: SN54BCT29862B 48 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74BCT29862B 96 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range: SN54BCT29862B –55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74BCT29862B 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 af fect device reliability.
NOTE 1: The input negative voltage rating may be exceeded if the input clamp current rating is observed.
recommended operating conditions
SN54BCT29862B SN74BCT29862B
UNIT
MIN NOM MAX MIN NOM MAX
UNIT
VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V
VIH High-level input voltage 2 2 V
VIL Low-level input voltage 0.8 0.8 V
IIK Input clamp current –18 –18 mA
IOH High-level output current –12 –24 mA
IOL Low-level output current 24 48 mA
TAOperating free-air temperature –55 125 0 70 °C
SN54BCT29862B, SN74BCT29862B
10-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS014B – NOVEMBER 1988 – REVISED NOVEMBER 1993
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54BCT29862B SN74BCT29862B
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP†MAX MIN TYP†MAX
UNIT
VIK VCC = 4.5 V, II = –18 mA –1.2 –1.2 V
VOH
VCC =45V
IOH = –12 mA 2.4 3.3 2.4 3.3
V
V
OH
V
CC =
4
.
5
V
IOH = –24 mA 2 3.1
V
VOL
VCC =45V
IOL = 24 mA 0.35 0.5
V
V
OL
V
CC =
4
.
5
V
IOL = 48 mA 0.35 0.5
V
IIVCC = 5.5 V, VI = 5.5 V 0.1 0.1 mA
IIH
Control inputs
VCC =55V
VI=27V
20 20
µA
I
IH A or B port‡
V
CC =
5
.
5
V
,
V
I =
2
.
7
V
70 70 µ
A
IIL
Control inputs
VCC =55V
VI=05V
–0.2 –0.2
mA
I
IL A or B port‡
V
CC =
5
.
5
V
,
V
I =
0
.
5
V
–0.2 –0.2
mA
IIO(off)§VCC = 0, VO = 2.7 V 0.1 0.1 mA
IOS¶VCC = 5.5 V, VO = 0 –75 –250 –75 –250 mA
Outputs high 20 32 20 32
ICC VCC = 5.5 V Outputs low 29 46 29 46 mA
Outputs disabled 6.5 11 6.5 11
CiVCC = 5 V, VI = 0.5 V or 2.5 V 6 6 pF
CoVCC = 5 V, VI = 0.5 V or 2.5 V 8 8 pF
†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.
§IO(off) = Power-of f bus leakage 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 Note 2)
PARAMETER FROM
(INPUT) TO
(OUTPUT)
VCC = 5 V,
CL = 50 pF,
R1 = 500 Ω,
R2 = 500 Ω,
TA = 25°C
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500 Ω,
R2 = 500 Ω,
TA = MIN to MAX#UNIT
′BCT29862B SN54BCT29862B SN74BCT29862B
MIN TYP MAX MIN MAX MIN MAX
tPLH
AorB
BorA
1 3.6 5.2 1 6.5 1 6.1
ns
tPHL
A
or
B
B
or
A
0.5 2.4 4.6 0.5 7.5 0.5 4.8
ns
tPZH
OE
AorB
2.5 5.3 7.2 2.5 9.1 2.5 8.4
ns
tPZL
OE
A
or
B
4.5 8 10.6 4.5 13.9 4.5 12.5
ns
tPHZ
OE
AorB
2.3 4.8 7.6 2.3 8.4 2.3 8.4
ns
tPLZ
OE
A
or
B
2.3 5.2 7 2.3 9.1 2.3 8.2
ns
#For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating condtions.
NOTE 2: Load circuits and voltage waveforms are shown in Section 1.
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Copyright 1998, Texas Instruments Incorporated
