SN54ABTH245, SN74ABTH245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS663D – APRIL 1996 – REVISED SEPTEMBER 1999
D
D
D
D
description
These octal bus transceivers are designed for
asynchronous communication between data
buses. The devices transmit data from the A bus
to the B bus or from the B bus to the A bus,
depending on the logic level at the
direction-control (DIR) input. The output-enable
(OE) input can be used to disable the device so
the buses are effectively isolated.
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VCC
OE
B1
B2
B3
B4
B5
B6
B7
B8
SN54ABTH245 . . . FK PACKAGE
(TOP VIEW)
A3
A4
A5
A6
A7
3
OE
D
SN54ABTH245 . . . J OR W PACKAGE
SN74ABTH245 . . . DB, DGV, DW, N, OR PW PACKAGE
(TOP VIEW)
A2
A1
DIR
VCC
D
State-of-the-Art EPIC-ΙΙB BiCMOS Design
Significantly Reduces Power Dissipation
Latch-Up Performance Exceeds 500 mA Per
JESD 17
Typical VOLP (Output Ground Bounce) < 1 V
at VCC = 5 V, TA = 25°C
Ioff and Power-Up 3-State Support Hot
Insertion
High-Drive Outputs (–32-mA IOH, 64-mA IOL)
Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), Thin Shrink Small-Outline (PW), and
Thin Very Small-Outline (DGV) Packages,
Ceramic Chip Carriers (FK), Plastic (N) and
Ceramic (J) DIPs, and Ceramic Flat (W)
Package
4
2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
B1
B2
B3
B4
B5
A8
GND
B8
B7
B6
D
When VCC is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down.
However, to ensure the high-impedance state above 2.1 V, OE should be tied to VCC through a pullup resistor;
the minimum value of the resistor is determined by the current-sinking capability of the driver.
This device is fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry
disables the outputs, preventing damaging current backflow through the device when it is powered down. The
power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down,
which prevents driver conflict.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The SN54ABTH245 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74ABTH245 is characterized for operation from –40°C to 85°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EPIC-ΙΙB is a trademark of Texas Instruments Incorporated.
Copyright 1999, 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
SN54ABTH245, SN74ABTH245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS663D – APRIL 1996 – REVISED SEPTEMBER 1999
FUNCTION TABLE
INPUTS
OE
DIR
OPERATION
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
logic symbol†
19
OE
1
DIR
2
A1
G3
3 EN1 [BA]
3 EN2 [AB]
18
1
B1
2
A2
A3
A4
A5
A6
A7
A8
3
17
4
16
5
15
6
14
7
13
8
12
9
11
B2
B3
B4
B5
B6
B7
B8
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
DIR
1
19
A1
2
18
To Seven Other Channels
2
OE
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• DALLAS, TEXAS 75265
B1
SN54ABTH245, SN74ABTH245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS663D – APRIL 1996 – REVISED SEPTEMBER 1999
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
Input voltage range, VI (except I/O ports) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
Voltage range applied to any output in the high or power-off state, VO . . . . . . . . . . . . . . . . . . . –0.5 V to 5.5 V
Current into any output in the low state, IO: SN54ABTH245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA
SN74ABTH245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –18 mA
Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
Package thermal impedance, θJA (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W
DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92°C/W
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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.
NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51.
recommended operating conditions (see Note 3)
SN54ABTH245
SN74ABTH245
MIN
MAX
MIN
MAX
4.5
5.5
4.5
5.5
UNIT
VCC
VIH
Supply voltage
VIL
VI
Low-level input voltage
IOH
IOL
High-level output current
VCC
–24
Low-level output current
48
64
mA
∆t/∆v
Input transition rise or fall rate
5
5
ns/V
∆t/∆VCC
TA
Power-up ramp rate
High-level input voltage
2
2
0.8
Input voltage
0
V
0.8
0
VCC
–32
–55
125
–40
V
V
mA
µs/V
200
Operating free-air temperature
V
85
°C
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
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• DALLAS, TEXAS 75265
3
SN54ABTH245, SN74ABTH245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS663D – APRIL 1996 – REVISED SEPTEMBER 1999
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
VOH
TEST CONDITIONS
VCC = 4.5 V,
VCC = 4.5 V,
II = –18 mA
IOH = –3 mA
VCC = 5 V,
VCC = 4
4.5
5V
VOL
VCC = 4
4.5
5V
MIN
SN54ABTH245
MIN
–1.2
MAX
SN74ABTH245
MIN
–1.2
2.5
2.5
IOH = –3 mA
IOH = –24 mA
3
3
3
2
2
IOH = –32 mA
IOL = 48 mA
2*
UNIT
V
V
2
0.55
IOL = 64 mA
0.55
0.55*
0.55
100
V
mV
Control
inputs
VCC = 0 to 5.5 V,
VI = VCC or GND
±1
±1
±1
A or B ports
VCC = 2.1 V to 5.5 V,
VI = VCC or GND
VI = 0.8 V
±20
±100
±20
100
100
100
–100
–100
–100
µ
µA
µA
II(hold)
I(h ld)
VCC = 4
5V
4.5
IOZPU
VCC = 0 to 2.1 V,
VO = 0.5 V to 2.7 V, OE = X
±50**
±50**
±50
µA
IOZPD
VCC = 2.1 V to 0,
VO = 0.5 V to 2.7 V, OE = X
±50**
±50**
±50
µA
±100
µA
50
µA
–180
mA
250
µA
Ioff
ICEX
IO‡
ICC
A or B ports
VCC = 0,
VCC = 5.5 V,
VO = 5.5 V
VI or VO ≤ 4.5 V
VCC = 5.5 V,
VO = 2.5 V
Outputs high
VCC = 5.5 V,
IO = 0,
VI = VCC or GND
±100
Outputs high
Outputs low
Outputs disabled
Control
inputs
Control
inputs
VI = 2.5 V or 0.5 V
∆ICC§
Ci
VI = 2 V
VCC = 5.5 V,
Outputs enabled
One input at 3.4 V,,
Other inputs at
Outputs disabled
VCC or GND
VCC = 5.5 V, One input at 3.4 V,
Other inputs at VCC or GND
ts
Data inp
inputs
50
–50
–140
–180
5
250
50
–50
–180
–50
250
22
30
30
30
mA
1
250
250
250
µA
1.5
1.5
1.5
mA
1.5
1.5
1.5
mA
1.5
1.5
1.5
mA
4
Cio
A or B ports VO = 2.5 V or 0.5 V
8
* On products compliant to MIL-PRF-38535, this parameter does not apply.
** On products compliant to MIL-PRF-38535, this parameter is not production tested.
† All typical values are at VCC = 5 V.
‡ Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
§ This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.
4
MAX
–1.2
2.5
Vhys
II
TA = 25°C
TYP†
MAX
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• DALLAS, TEXAS 75265
pF
pF
SN54ABTH245, SN74ABTH245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS663D – APRIL 1996 – REVISED SEPTEMBER 1999
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature, CL = 50 pF (unless otherwise noted) (see Figure 1)
FROM
(INPUT)
TO
(OUTPUT)
tPLH
tPHL
A or B
B or A
tPZH
tPZL
OE
A or B
tPHZ
tPLZ
OE
A or B
PARAMETER
tsk(o)
VCC = 5 V,
TA = 25°C
SN54ABTH245
MIN
TYP
MAX
MIN
MAX
MIN
MAX
1
2
3.2
0.8
3.8
1
3.6
1
2.6
3.5
0.8
4.2
1
3.9
2
3.5
4.5
1.2
6.2
2
5.6
1.9
4
5.3
1.3
7
1.9
6.2
2.2
4.4
5.4
2.2
6.1
2.2
5.9
1.5
3
4
1
4.9
1.5
4.5
0.5
POST OFFICE BOX 655303
SN74ABTH245
• DALLAS, TEXAS 75265
0.5
UNIT
ns
ns
ns
ns
5
SN54ABTH245, SN74ABTH245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS663D – APRIL 1996 – REVISED SEPTEMBER 1999
PARAMETER MEASUREMENT INFORMATION
500 Ω
From Output
Under Test
S1
7V
Open
GND
CL = 50 pF
(see Note A)
500 Ω
TEST
S1
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
7V
Open
3V
LOAD CIRCUIT
Timing Input
1.5 V
0V
tw
tsu
3V
th
3V
Input
1.5 V
1.5 V
0V
1.5 V
Data Input
0V
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3V
1.5 V
Input
1.5 V
0V
1.5 V
VOL
Output
tPLZ
3.5 V
1.5 V
1.5 V
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
Output
Waveform 2
S1 at Open
(see Note B)
VOL + 0.3 V
VOL
tPHZ
tPZH
VOH
1.5 V
1.5 V
0V
Output
Waveform 1
S1 at 7 V
(see Note B)
tPLH
tPHL
1.5 V
tPZL
VOH
1.5 V
Output
3V
Output
Control
tPHL
tPLH
1.5 V
1.5 V
VOH – 0.3 V
VOH
≈0V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
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.
D. The outputs are measured one at a time with one transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com
10-Jun-2022
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)
Samples
(4/5)
(6)
5962-9762301Q2A
ACTIVE
LCCC
FK
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
59629762301Q2A
SNJ54ABTH
245FK
5962-9762301QSA
ACTIVE
CFP
W
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-9762301QS
A
SNJ54ABTH245W
SN74ABTH245DBR
ACTIVE
SSOP
DB
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ABH245
Samples
SN74ABTH245DW
ACTIVE
SOIC
DW
20
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ABTH245
Samples
SN74ABTH245DWE4
ACTIVE
SOIC
DW
20
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ABTH245
Samples
SN74ABTH245DWR
ACTIVE
SOIC
DW
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ABTH245
Samples
SN74ABTH245N
ACTIVE
PDIP
N
20
20
RoHS & Green
NIPDAU
N / A for Pkg Type
-40 to 85
SN74ABTH245N
Samples
SN74ABTH245PWR
ACTIVE
TSSOP
PW
20
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ABH245
Samples
SNJ54ABTH245FK
ACTIVE
LCCC
FK
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
59629762301Q2A
SNJ54ABTH
245FK
SNJ54ABTH245W
ACTIVE
CFP
W
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-9762301QS
A
SNJ54ABTH245W
(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.
Addendum-Page 1
Samples
Samples
Samples
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
10-Jun-2022
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of