TI SN74AHCT245DW

SCLS233M − OCTOBER 1995 − REVISED SEPTEMBER 2003
D Inputs Are TTL-Voltage Compatible
D Latch-Up Performance Exceeds 250 mA Per
D ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model (A114-A)
− 200-V Machine Model (A115-A)
− 1000-V Charged-Device Model (C101)
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
A1
A2
A3
A4
A5
A6
A7
A8
1
20
A2
A1
DIR
VCC
VCC
VCC
OE
B1
B2
B3
B4
B5
B6
B7
B8
SN54AHCT245 . . . FK PACKAGE
(TOP VIEW)
A3
A4
A5
A6
A7
19 OE
18 B1
2
3
17 B2
16 B3
4
5
15 B4
14 B5
6
7
13 B6
12 B7
8
9
10
11
4
3 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
2
20
B8
1
DIR
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
SN74AHCT245 . . . RGY PACKAGE
(TOP VIEW)
GND
SN54AHCT245 . . . J OR W PACKAGE
SN74AHCT245 . . . DB, DGV, DW, N, NS,
OR PW PACKAGE
(TOP VIEW)
OE
JESD 17
description/ordering information
These octal bus transceivers are designed for asynchronous two-way communication between data buses. The
control-function implementation minimizes external timing requirements.
The ’AHCT245 devices allow data transmission 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 that the buses effectively are isolated.
To ensure the high-impedance state during power up or power down, 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.
ORDERING INFORMATION
Tube
SN74AHCT245N
SN74AHCT245N
QFN − RGY
Tape and reel
SN74AHCT245RGYR
HB245
Tube
SN74AHCT245DW
Tape and reel
SN74AHCT245DWR
SOP − NS
Tape and reel
SN74AHCT245NSR
AHCT245
SSOP − DB
Tape and reel
SN74AHCT245DBR
HB245
Tube
SN74AHCT245PW
Tape and reel
SN74AHCT245PWR
TVSOP − DGV
Tape and reel
SN74AHCT245DGVR
HB245
CDIP − J
Tube
SNJ54AHCT245J
SNJ54AHCT245J
CFP − W
Tube
SNJ54AHCT245W
SNJ54AHCT245W
LCCC − FK
Tube
SNJ54AHCT245FK
SNJ54AHCT245FK
TSSOP − PW
−55°C
−55
C to 125
125°C
C
TOP-SIDE
MARKING
PDIP − N
SOIC − DW
−40°C
−40
C to 85
85°C
C
ORDERABLE
PART NUMBER
PACKAGE†
TA
AHCT245
HB245
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
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.
Copyright  2003, Texas Instruments Incorporated
! " #$%! " &$'(#! )!%*
)$#!" # ! "&%##!" &% !+% !%" %," "!$%!"
"!)) -!.* )$#! &#%""/ )%" ! %#%""(. #($)%
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(( &%!%" % !%"!%)
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&)$#!
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1
SCLS233M − OCTOBER 1995 − REVISED SEPTEMBER 2003
FUNCTION TABLE
(each transceiver)
INPUTS
OPERATION
OE
DIR
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
logic diagram (positive logic)
DIR
1
19
A1
OE
2
18
B1
To Seven Other Channels
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 (see Note 1): Control inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
I/O, Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to VCC + 0.5 V
Input clamp current, IIK (VI < 0): Control inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20 mA
I/O, Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±75 mA
Package thermal impedance, θJA (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W
(see Note 2): DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92°C/W
(see Note 2): DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W
(see Note 2): N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/W
(see Note 2): NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60°C/W
(see Note 2): PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°C/W
(see Note 3): RGY package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37°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 voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
3. The package thermal impedance is calculated in accordance with JESD 51-5.
2
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SCLS233M − OCTOBER 1995 − REVISED SEPTEMBER 2003
recommended operating conditions (see Note 4)
SN54AHCT245
SN74AHCT245
MIN
MAX
MIN
MAX
4.5
5.5
4.5
5.5
UNIT
VCC
VIH
Supply voltage
VIL
VI
Low-level input voltage
0.8
V
Input voltage
0
5.5
0
5.5
V
VO
IOH
Output voltage
0
0
VCC
−8
V
High-level output current
VCC
−8
mA
IOL
∆t/∆v
Low-level output current
8
8
mA
20
20
ns/V
High-level input voltage
2
2
0.8
Input transition rise or fall rate
V
V
TA
Operating free-air temperature
−55
125
−40
85
°C
NOTE 4: 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.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
VOH
IOH = −50 mA
IOH = −8 mA
4.5 V
VOL
IOL = 50 mA
IOL = 8 mA
4.5 V
II
OE or DIR
VI = 5.5 V or GND
IOZ
A or B inputs†
VO = VCC or GND
ICC
VI = VCC or GND,
One input at 3.4 V,
Other inputs at
VCC or GND
∆ICC‡
Ci
OE or DIR
VI = VCC or GND
VI = VCC or GND
MIN
4.4
IO = 0
TA = 25°C
TYP
MAX
4.5
3.94
SN54AHCT245
MIN
MAX
SN74AHCT245
MIN
4.4
4.4
3.8
3.8
MAX
UNIT
V
0.1
0.1
0.1
0.36
0.44
0.44
0 V to 5.5 V
±0.1
±1*
±1
mA
5.5 V
±0.25
±2.5
±2.5
mA
5.5 V
4
40
40
mA
5.5 V
1.35
1.5
1.5
mA
10
pF
5V
2.5
10
Cio A or B inputs
5V
4
* On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.
† For I/O ports, the parameter IOZ includes the input leakage current.
‡ This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC.
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V
pF
3
SCLS233M − OCTOBER 1995 − REVISED SEPTEMBER 2003
switching characteristics over recommended operating
VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
tPLH
tPHL
A or B
B or A
CL = 15 pF
tPZH
tPZL
OE
A or B
CL = 15 pF
tPHZ
tPLZ
OE
A or B
CL = 15 pF
tPLH
tPHL
A or B
B or A
CL = 50 pF
tPZH
tPZL
OE
A or B
CL = 50 pF
tPHZ
tPLZ
OE
A or B
CL = 50 pF
MIN
TA = 25°C
TYP
MAX
free-air
temperature
SN54AHCT245
range,
SN74AHCT245
MIN
MAX
MIN
MAX
4.5**
7.7**
1**
10**
1
8.5
4.5**
7.7**
1**
10**
1
8.5
8.9**
13.8**
1**
16**
1
15
8.9**
13.8**
1**
16**
1
15
9.2**
14.4**
1**
16.5**
1
15.5
9.2**
14.4**
1**
16.5**
1
15.5
5.3
8.7
1
11
1
9.5
5.3
8.7
1
11
1
9.5
9.7
14.8
1
17
1
16
9.7
14.8
1
17
1
16
10
15.4
1
17.5
1
16.5
10
15.4
1
17.5
1
16.5
tsk(o)
CL = 50 pF
** On products compliant to MIL-PRF-38535, this parameter is not production tested.
*** On products compliant to MIL-PRF-38535, this parameter does not apply.
1***
1
UNIT
ns
ns
ns
ns
ns
ns
ns
noise characteristics, VCC = 5 V, CL = 50 pF, TA = 25°C (see Note 5)
SN74AHCT245
PARAMETER
VOH(V)
VIH(D)
MIN
TYP
Quiet output, minimum dynamic VOH
MAX
4
High-level dynamic input voltage
V
2
VIL(D)
Low-level dynamic input voltage
NOTE 5: Characteristics are for surface-mount packages only.
UNIT
V
0.8
V
TYP
UNIT
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER
Cpd
4
TEST CONDITIONS
Power dissipation capacitance
No load,
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
f = 1 MHz
13
pF
SCLS233M − OCTOBER 1995 − REVISED SEPTEMBER 2003
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
Test
Point
RL = 1 kΩ
From Output
Under Test
S1
VCC
Open
TEST
GND
CL
(see Note A)
CL
(see Note A)
S1
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open Drain
Open
VCC
GND
VCC
LOAD CIRCUIT FOR
3-STATE AND OPEN-DRAIN OUTPUTS
LOAD CIRCUIT FOR
TOTEM-POLE OUTPUTS
3V
1.5 V
Timing Input
0V
tw
3V
1.5 V
Input
1.5 V
th
tsu
3V
1.5 V
Data Input
1.5 V
0V
0V
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3V
1.5 V
Input
1.5 V
0V
tPLH
In-Phase
Output
tPHL
50% VCC
tPHL
Out-of-Phase
Output
VOH
50% VCC
VOL
Output
Waveform 1
S1 at VCC
(see Note B)
VOH
50% VCC
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
1.5 V
1.5 V
0V
tPZL
tPLZ
≈VCC
50% VCC
tPZH
tPLH
50% VCC
3V
Output
Control
Output
Waveform 2
S1 at GND
(see Note B)
VOL + 0.3 V
VOL
tPHZ
50% VCC
VOH − 0.3 V
VOH
≈0 V
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 ≤ 1 MHz, ZO = 50 Ω, tr ≤ 3 ns, tf ≤ 3 ns.
D. The outputs are measured one at a time with one input transition per measurement.
E. All parameters and waveforms are not applicable to all devices.
Figure 1. Load Circuit and Voltage Waveforms
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5
MCFP006B − JANUARY 1995 − REVISED JULY 2003
W (R-GDFP-F20)
CERAMIC DUAL FLATPACK
Base and Seating Plane
0.300 (7,62)
0.245 (6,22)
0.045 (1,14)
0.026 (0,66)
0.009 (0,23)
0.004 (0,10)
0.100 (2,54)
0.045 (1,14)
0.320 (8,13) MAX
1
0.022 (0,56)
0.015 (0,38)
20
0.050 (1,27)
0.540 (13,72)
MAX
0.005 (0,13) MIN
4 Places
10
11
0.370 (9,40)
0.250 (6,35)
0.370 (9,40)
0.250 (6,35)
4040180-4 /D 07/03
NOTES: A.
B.
C.
D.
E.
All linear dimensions are in inches (millimeters).
This drawing is subject to change without notice.
This package can be hermetically sealed with a ceramic lid using glass frit.
Index point is provided on cap for terminal identification only.
Falls within Mil-Std 1835 GDFP2-F20
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MECHANICAL DATA
MLCC006B – OCTOBER 1996
FK (S-CQCC-N**)
LEADLESS CERAMIC CHIP CARRIER
28 TERMINAL SHOWN
18
17
16
15
14
13
NO. OF
TERMINALS
**
12
19
11
20
10
A
B
MIN
MAX
MIN
MAX
20
0.342
(8,69)
0.358
(9,09)
0.307
(7,80)
0.358
(9,09)
28
0.442
(11,23)
0.458
(11,63)
0.406
(10,31)
0.458
(11,63)
21
9
22
8
44
0.640
(16,26)
0.660
(16,76)
0.495
(12,58)
0.560
(14,22)
23
7
52
0.739
(18,78)
0.761
(19,32)
0.495
(12,58)
0.560
(14,22)
24
6
68
0.938
(23,83)
0.962
(24,43)
0.850
(21,6)
0.858
(21,8)
84
1.141
(28,99)
1.165
(29,59)
1.047
(26,6)
1.063
(27,0)
B SQ
A SQ
25
5
26
27
28
1
2
3
4
0.080 (2,03)
0.064 (1,63)
0.020 (0,51)
0.010 (0,25)
0.020 (0,51)
0.010 (0,25)
0.055 (1,40)
0.045 (1,14)
0.045 (1,14)
0.035 (0,89)
0.045 (1,14)
0.035 (0,89)
0.028 (0,71)
0.022 (0,54)
0.050 (1,27)
4040140 / D 10/96
NOTES: A.
B.
C.
D.
E.
All linear dimensions are in inches (millimeters).
This drawing is subject to change without notice.
This package can be hermetically sealed with a metal lid.
The terminals are gold plated.
Falls within JEDEC MS-004
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MECHANICAL DATA
MPDS006C – FEBRUARY 1996 – REVISED AUGUST 2000
DGV (R-PDSO-G**)
PLASTIC SMALL-OUTLINE
24 PINS SHOWN
0,40
0,23
0,13
24
13
0,07 M
0,16 NOM
4,50
4,30
6,60
6,20
Gage Plane
0,25
0°–8°
1
0,75
0,50
12
A
Seating Plane
0,15
0,05
1,20 MAX
PINS **
0,08
14
16
20
24
38
48
56
A MAX
3,70
3,70
5,10
5,10
7,90
9,80
11,40
A MIN
3,50
3,50
4,90
4,90
7,70
9,60
11,20
DIM
4073251/E 08/00
NOTES: A.
B.
C.
D.
All linear dimensions are in millimeters.
This drawing is subject to change without notice.
Body dimensions do not include mold flash or protrusion, not to exceed 0,15 per side.
Falls within JEDEC: 24/48 Pins – MO-153
14/16/20/56 Pins – MO-194
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MECHANICAL DATA
MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001
DB (R-PDSO-G**)
PLASTIC SMALL-OUTLINE
28 PINS SHOWN
0,38
0,22
0,65
28
0,15 M
15
0,25
0,09
8,20
7,40
5,60
5,00
Gage Plane
1
14
0,25
A
0°–ā8°
0,95
0,55
Seating Plane
2,00 MAX
0,10
0,05 MIN
PINS **
14
16
20
24
28
30
38
A MAX
6,50
6,50
7,50
8,50
10,50
10,50
12,90
A MIN
5,90
5,90
6,90
7,90
9,90
9,90
12,30
DIM
4040065 /E 12/01
NOTES: A.
B.
C.
D.
All linear dimensions are in millimeters.
This drawing is subject to change without notice.
Body dimensions do not include mold flash or protrusion not to exceed 0,15.
Falls within JEDEC MO-150
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MECHANICAL DATA
MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999
PW (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
14 PINS SHOWN
0,30
0,19
0,65
14
0,10 M
8
0,15 NOM
4,50
4,30
6,60
6,20
Gage Plane
0,25
1
7
0°– 8°
A
0,75
0,50
Seating Plane
0,15
0,05
1,20 MAX
PINS **
0,10
8
14
16
20
24
28
A MAX
3,10
5,10
5,10
6,60
7,90
9,80
A MIN
2,90
4,90
4,90
6,40
7,70
9,60
DIM
4040064/F 01/97
NOTES: A.
B.
C.
D.
All linear dimensions are in millimeters.
This drawing is subject to change without notice.
Body dimensions do not include mold flash or protrusion not to exceed 0,15.
Falls within JEDEC MO-153
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