INTEGRATED CIRCUITS
74ABT245
Octal transceiver with direction pin
(3-State)
Product data
Supersedes data of 1998 Jan 16
2003 Feb 06
Philips Semiconductors
Product data
Octal transceiver with direction pin (3-State)
FEATURES
74ABT245
DESCRIPTION
• Octal bidirectional bus interface
• 3-State buffers
• Output capability: +64 mA/–32 mA
• Latch-up protection exceeds 500 mA per Jedec Std 17
• ESD protection exceeds 2000 V per MIL STD 833 Method 3015
The 74ABT245 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
The 74ABT245 device is an octal transceiver featuring non-inverting
3-State bus compatible outputs in both send and receive directions.
The control function implementation minimizes external timing
requirements. The device features an Output Enable (OE) input for
easy cascading and a Direction (DIR) input for direction control.
and 200 V per Machine Model
• Power-up 3-State
• Live insertion/extraction permitted
• Inputs are disabled during 3-State mode
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
Tamb = 25 °C; GND = 0 V
tPLH
tPHL
Propagation delay
An to Bn or Bn to An
CL = 50 pF; VCC = 5 V
TYPICAL
UNIT
2.2
2.9
ns
pF
CIN
Input capacitance DIR, OE
VI = 0 V or VCC
4
CI/O
I/O pin capacitance
Outputs disabled; VO = 0 V or VCC
7
pF
ICCZ
Total supply current
Outputs disabled; VCC =5.5 V
50
µA
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
PART NUMBER
DWG NUMBER
20-Pin plastic SO
–40 °C to +85 °C
74ABT245D
SOT163-1
20-Pin Plastic SSOP Type II
–40 °C to +85 °C
74ABT245DB
SOT339-1
20-Pin Plastic TSSOP Type I
–40 °C to +85 °C
74ABT245PW
SOT360-1
PIN CONFIGURATION
PIN DESCRIPTION
PIN
NUMBER
SYMBOL
19 OE
1
DIR
18 B0
2, 3, 4, 5,
6, 7, 8, 9
A0 – A7
Data inputs/outputs (A side)
18, 17, 16,
15, 14, 13,
12, 11
B0 – B7
Data inputs/outputs (B side)
1
20 VCC
A0
2
A1
3
A2
4
17 B1
A3
5
16 B2
A4
6
15 B3
A5
7
14 B4
19
OE
A6
8
13 B5
10
GND
Ground (0 V)
A7
9
12 B6
20
VCC
Positive supply voltage
GND 10
11
B7
SA00121
2003 Feb 06
NAME AND FUNCTION
DIR
2
Direction control input
Output enable input (active-LOW)
Philips Semiconductors
Product data
Octal transceiver with direction pin (3-State)
LOGIC SYMBOL
74ABT245
LOGIC SYMBOL (IEEE/IEC)
1
DIR
A0
19
19
3 EN1 (BA)
2
1
18
A1
G3
OE
3 EN2 (AB)
B0
3
17
A2
B1
4
1
2
16
A3
B2
5
15
A4
B3
6
14
A5
18
2
3
17
4
16
5
15
6
14
7
13
8
12
9
11
B4
7
13
A6
B5
8
12
A7
B6
9
11
B7
SA00122
SA00123
FUNCTION TABLE
INPUTS
H
L
X
Z
INPUTS/OUTPUTS
OE
DIR
An
Bn
L
L
An = Bn
Inputs
L
H
Inputs
Bn = An
H
X
Z
Z
= High voltage level
= Low voltage level
= Don’t care
= High impedance “off” state
ABSOLUTE MAXIMUM RATINGS1, 2
SYMBOL
VCC
PARAMETER
CONDITIONS
RATING
UNIT
–0.5 to +7.0
V
–18
mA
–1.2 to +7.0
V
VO < 0
–50
mA
DC supply voltage
IIK
DC input diode current
VI
DC input voltage3
IOK
DC output diode current
VI < 0
VOUT
DC output voltage3
output in Off or High state
–0.5 to +5.5
V
IOUT
DC output current
output in Low state
128
mA
Tstg
Storage temperature range
–65 to 150
°C
NOTES:
1. Stresses beyond those listed 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.
2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150 °C.
3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2003 Feb 06
3
Philips Semiconductors
Product data
Octal transceiver with direction pin (3-State)
74ABT245
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
VCC
PARAMETER
Min
DC supply voltage
UNIT
Max
4.5
5.5
V
0
VCC
V
VI
Input voltage
VIH
HIGH-level input voltage
VIL
LOW-level Input voltage
0.8
V
IOH
HIGH-level output current
–32
mA
IOL
LOW-level output current
64
mA
0
5
ns/V
–40
+85
°C
2.0
∆t/∆v
Input transition rise or fall rate
Tamb
Operating free-air temperature range
V
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Tamb = +25 °C
Min
VIK
Input clamp voltage
VOH
High-level output voltage
VOL
Low-level output voltage
II
Input leakage
g
current
VCC = 4.5 V; IIK = –18 mA
Typ
Max
–0.9
–1.2
Tamb = –40 °C
to +85 °C
Min
UNIT
Max
–1.2
V
VCC = 4.5 V; IOH = –3 mA; VI = VIL or VIH
2.5
2.9
2.5
V
VCC = 5.0 V; IOH = –3 mA; VI = VIL or VIH
3.0
3.4
3.0
V
VCC = 4.5 V; IOH = –32 mA; VI = VIL or VIH
2.0
2.4
VCC = 4.5 V; IOL = 64 mA; VI = VIL or VIH
0.42
Control pins
VCC = 5.5 V; VI = GND or 5.5 V
±0.01
Data pins
VCC = 5.5 V; VI = GND or 5.5 V
±5
2.0
0.55
V
0.55
V
±1.0
±1.0
µA
±100
±100
µA
Power-off leakage current
VCC = 0.0 V; VI or VO ≤ 4.5 V
±5.0
±100
±100
µA
Power-up/down 3-State
output current3
VCC = 2.0 V; VO = 0.5 V; VI = GND or VCC;
VOE = Don’t care
±5.0
±50
±50
µA
IIH + IOZH
3-State output High current
VCC = 5.5 V; VO = 2.7 V; VI = VIL or VIH
5.0
50
50
µA
IIL + IOZL
3-State output Low current
VCC = 5.5 V; VO = 0.5 V; VI = VIL or VIH
–5.0
–50
–50
µA
ICEX
Output high leakage current
VCC = 5.5 V; VO = 5.5 V; VI = GND or VCC
Output current1
VCC = 5.5 V; VO = 2.5 V
IOFF
IPU/IPD
IO
ICCH
ICCL
Quiescent supply current
ICCZ
∆ICC
Additional supply current per
input pin2
50
µA
–180
mA
250
250
µA
24
30
30
mA
VCC = 5.5 V; Outputs 3-State;
VI = GND or VCC
50
250
250
µA
Outputs enabled, one input at 3.4 V, other
inputs at VCC or GND; VCC = 5.5 V
0.5
1.5
1.5
mA
Outputs 3-State, one data input at 3.4 V,
other inputs at VCC or GND; VCC = 5.5 V
50
250
250
µA
Outputs 3-State, one enable input at 3.4 V,
other inputs at VCC or GND; VCC = 5.5 V
0.5
1.5
1.5
mA
5.0
50
–100
–180
VCC = 5.5 V; Outputs HIGH;
VI = GND or VCC
50
VCC = 5.5 V; Outputs LOW;
VI = GND or VCC
–40
–40
NOTES:
1. Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
2. This is the increase in supply current for each input at 3.4 V.
3. This parameter is valid for any VCC between 0 V and 2.1 V with a transition time of up to 10 msec. For VCC = 2.1 V to VCC = 5 V"10%, a
transition time of up to 100 µsec is permitted.
2003 Feb 06
4
Philips Semiconductors
Product data
Octal transceiver with direction pin (3-State)
74ABT245
AC CHARACTERISTICS
GND = 0 V; tR = tF = 2.5 ns; CL = 50 pF, RL = 500 Ω
LIMITS
SYMBOL
PARAMETER
Tamb = +25 °C
VCC = +5.0 V
WAVEFORM
Tamb = –40 °C to +85 °C
VCC = +5.0 V ±0.5 V
Min
Typ
Max
Min
Max
UNIT
tPLH
tPHL
Propagation delay
An to Bn or Bn to An
1
1.0
1.0
2.2
2.9
4.1
4.2
1.0
1.0
4.6
4.6
ns
tPZH
tPZL
Output enable time
to HIGH and LOW level
2
1.3
2.3
3.0
4.0
4.8
5.8
1.3
2.3
5.3
6.3
ns
tPHZ
tPLZ
Output disable time
from HIGH and LOW Level
2
1.0
1.0
4.7
4.1
6.2
5.8
1.0
1.0
7.2
6.3
ns
AC WAVEFORMS
VM = 1.5V, VIN = GND to 3.0V
nOE INPUT
VM
An or Bn
INPUT
VM
VM
VM
tPZL
tPLH
tPLZ
tPHL
VM
Bn or An
OUTPUT
VOL + 0.3V
VOL
VM
VM
3.5V
OUTPUT
tPHZ
tPZH
VOH
VOH – 0.3V
VM
OUTPUT
SA00124
0V
Waveform 1. Waveforms showing the input to output
propagation delays
SA00024
Waveform 2. Waveforms showing the 3-State Output Enable
and Disable times
TEST CIRCUIT AND WAVEFORMS
7V
500 Ω
From Output
Under Test
S1
Open
GND
500 Ω
CL = 50 pF
Load Circuit
TEST
S1
tpd
open
tPLZ/tPZL
7V
tPHZ/tPZH
open
DEFINITIONS
Load capacitance includes jig and probe capacitance;
CL =
see AC CHARACTERISTICS for value.
SA00012
2003 Feb 06
5
Philips Semiconductors
Product data
Octal transceiver with direction pin (3-State)
SO20: plastic small outline package; 20 leads; body width 7.5 mm
2003 Feb 06
6
74ABT245
SOT163-1
Philips Semiconductors
Product data
Octal transceiver with direction pin (3-State)
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
2003 Feb 06
7
74ABT245
SOT339-1
Philips Semiconductors
Product data
Octal transceiver with direction pin (3-State)
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
2003 Feb 06
8
74ABT245
SOT360-1
Philips Semiconductors
Product data
Octal transceiver with direction pin (3-State)
74ABT245
REVISION HISTORY
Rev
Date
Description
_3
20030206
Product data (9397 750 11087); ECN 853-1447 29305 of 17 December 2002;
Supersedes Product specfication (9397 750 03467) of 1998 Jan 16.
Modifications:
• Delete all references to N package. DIP20 package option discontinued.
_2
19980116
Product specification (9397 750 03467) 1998 Jan 16; ECN 853-1447 18867 of 16 January 1998.
Supersedes data of 1996 Sep 10.
Data sheet status
Level
Data sheet status [1]
Product
status [2] [3]
Definitions
I
Objective data
Development
This data sheet contains data from the objective specification for product development.
Philips Semiconductors reserves the right to change the specification in any manner without notice.
II
Preliminary data
Qualification
This data sheet contains data from the preliminary specification. Supplementary data will be published
at a later date. Philips Semiconductors reserves the right to change the specification without notice, in
order to improve the design and supply the best possible product.
III
Product data
Production
This data sheet contains data from the product specification. Philips Semiconductors reserves the
right to make changes at any time in order to improve the design, manufacturing and supply. Relevant
changes will be communicated via a Customer Product/Process Change Notification (CPCN).
[1] Please consult the most recently issued data sheet before initiating or completing a design.
[2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL
http://www.semiconductors.philips.com.
[3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given
in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no
representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Life support — These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be
expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree
to fully indemnify Philips Semiconductors for any damages resulting from such application.
Right to make changes — Philips Semiconductors reserves the right to make changes in the products—including circuits, standard cells, and/or software—described
or contained herein in order to improve design and/or performance. When the product is in full production (status ‘Production’), relevant changes will be communicated
via a Customer Product/Process Change Notification (CPCN). Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys
no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent,
copyright, or mask work right infringement, unless otherwise specified.
Koninklijke Philips Electronics N.V. 2003
All rights reserved. Printed in U.S.A.
Contact information
For additional information please visit
http://www.semiconductors.philips.com.
Fax: +31 40 27 24825
Date of release: 01-03
For sales offices addresses send e-mail to:
sales.addresses@www.semiconductors.philips.com.
Document order number:
2003 Feb 06
9
9397 750 11087
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