INTEGRATED CIRCUITS
74ABT2245
Octal transceiver with direction pin and
30 Ω series termination resistors (3-State)
Product data
Supersedes data of 1998 Jan 16
2002 Dec 17
Philips Semiconductors
Product data
Octal transceiver with direction pin and
30 Ω series termination resistors (3-State)
FEATURES
74ABT2245
DESCRIPTION
• Octal bidirectional bus interface
• 3-State buffers
• Output capability: +12 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 74ABT2245 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed.
The 74ABT2245 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
• Same as 74ABT245-1
• Outputs include series resistance of 30 Ω, making external
The 74ABT2245 is designed with 30 Ω series resistance in both the
HIGH and LOW states of the output. This design reduces line noise
in applications such as memory address drivers, clock drivers, and
bus receivers/transmitters.
The 74ABT2245 is the same as the 74ABT245-1. The part number
has been changed to reflect industry standards.
termination resistors unnecessary
• Inputs are disabled during 3-State mode
QUICK REFERENCE DATA
SYMBOL
CONDITIONS
Tamb = 25 °C; GND = 0 V
PARAMETER
TYPICAL
UNIT
3.9
ns
tPLH
tPHL
Propagation delay
An to Bn or Bn to An
CL = 50 pF; VCC = 5 V
CIN
Input capacitance DIR, OE
VI = 0 V or VCC
4
pF
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
74ABT2245D
SOT163-1
20-Pin Plastic SSOP Type II
–40 °C to +85 °C
74ABT2245DB
SOT339-1
20-Pin Plastic TSSOP Type I
–40 °C to +85 °C
74ABT2245PW
SOT360-1
PIN CONFIGURATION
PIN DESCRIPTION
PIN NUMBER
SYMBOL
1
DIR
18 B0
2, 3, 4, 5, 6, 7, 8, 9
A0 – A7
Data inputs/outputs (A side)
4
17 B1
Data inputs/outputs (B side)
16 B2
18, 17, 16, 15, 14,
13, 12, 11
B0 – B7
5
A4
6
15 B3
19
OE
A5
7
14 B4
A6
8
13 B5
10
GND
Ground (0 V)
A7
9
12 B6
20
VCC
Positive supply voltage
DIR
1
20 VCC
A0
2
19 OE
A1
3
A2
A3
GND 10
11
B7
SA00121
2002 Dec 17
2
NAME AND FUNCTION
Direction control input
Output enable input
(active-LOW)
Philips Semiconductors
Product data
Octal transceiver with direction pin and
30 Ω series termination resistors (3-State)
LOGIC SYMBOL
74ABT2245
FUNCTION TABLE
INPUTS
1
DIR
19
OE
2
A0
18
B0
3
A1
17
B1
4
A2
A3
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
VCC
13
B5
8
A6
Bn
SCHEMATIC OF EACH OUTPUT
14
A5
An
B4
15
7
DIR
B3
B2
6
A4
OE
H
L
X
Z
16
5
INPUTS/OUTPUTS
12
B6
9
A7
11
B7
SA00122
OUTPUT
LOGIC SYMBOL IEEE/IEC
19
G3
3 EN1 (BA)
1
3 EN2 (AB)
SA00237
1
2
2
18
3
17
4
16
5
15
6
14
7
13
8
12
9
11
SA00313
2002 Dec 17
3
Philips Semiconductors
Product data
Octal transceiver with direction pin and
30 Ω series termination resistors (3-State)
74ABT2245
ABSOLUTE MAXIMUM RATINGS1, 2
PARAMETER
SYMBOL
VCC
IIK
CONDITIONS
RATING
UNIT
–0.5 to +7.0
V
–18
mA
–1.2 to +7.0
V
VO < 0 V
–50
mA
output in Off or HIGH state
–0.5 to +5.5
V
output in LOW state
128
mA
–65 to 150
°C
DC supply voltage
DC input diode current
VI < 0 V
voltage3
VI
DC input
IOK
DC output diode current
voltage3
VOUT
DC output
IOUT
DC output current
Tstg
Storage temperature range
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.
RECOMMENDED OPERATING CONDITIONS
SYMBOL
VCC
PARAMETER
LIMITS
DC supply voltage
UNIT
Min
Max
4.5
5.5
V
0
VCC
V
VI
Input voltage
VIH
HIGH-level input voltage
2.0
–
V
VIL
LOW-level Input voltage
–
0.8
V
IOH
HIGH-level output current
–
–32
mA
IOL
LOW-level output current
–
12
mA
∆t/∆v
Input transition rise or fall rate
0
5
ns/V
Tamb
Operating free-air temperature range
–40
+85
°C
2002 Dec 17
4
Philips Semiconductors
Product data
Octal transceiver with direction pin and
30 Ω series termination resistors (3-State)
74ABT2245
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
Tamb = –40 °C
to +85 °C
Tamb = +25 °C
TEST CONDITIONS
UNIT
Min
Typ
Max
Min
Max
–
–0.9
–1.2
–
–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
–
2.0
–
V
VCC = 4.5 V; IOL = 5 mA; VI = VIL or VIH
–
0.32
0.55
–
0.55
V
VCC = 4.5 V; IOL = 12 mA; VI = VIL or VIH
–
0.5
0.8
–
0.8
V
Control pins
VCC = 5.5 V; VI = GND or 5.5 V
–
±0.01
±1.0
–
±1.0
µA
Data pins
VCC = 5.5 V; VI = GND or 5.5 V
–
±5
±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 = 2.1 V; VO = 0.5 V; VI = GND or VCC;
V OE = 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
–
5.0
50
–
50
µA
Output current1
VCC = 5.5 V; VO = 2.5 V
–40
–100
–180
–40
–180
mA
VCC = 5.5 V; Outputs HIGH, VI = GND or VCC
–
50
250
–
250
µA
VCC = 5.5 V; Outputs LOW, VI = GND or VCC
–
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
VIK
VOH
VOL
O
II
IOFF
IPU/IPD
IO
Input clamp voltage
HIGH-level output voltage
LOW level output voltage
LOW-level
Input leakage
g
current
ICCH
ICCL
Quiescent supply
su ly current
ICCZ
∆ICC
Additional supply current per
input pin2
VCC = 4.5 V; IIK = –18 mA
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. From VCC = 2.1 V to VCC = 5 V ± 10%, a
transition time of up to 100 µsec is permitted.
2002 Dec 17
5
Philips Semiconductors
Product data
Octal transceiver with direction pin and
30 Ω series termination resistors (3-State)
74ABT2245
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
2.8
3.9
4.2
5.0
1.0
1.0
4.7
5.4
ns
tPZH
tPZL
Output enable time
to HIGH and LOW level
2
1.3
3.0
3.5
5.5
4.6
7.0
1.3
3.0
5.5
7.8
ns
tPHZ
tPLZ
Output disable time
from HIGH and LOW Level
2
1.5
1.0
4.0
3.4
5.4
4.6
1.5
1.0
6.3
5.0
ns
AC WAVEFORMS
VM = 1.5 V, VIN = GND to 3.0 V
OE
INPUT
VM
VM
An or Bn
INPUT
VM
VM
tPLH
3.5V
tPHL
OUTPUT
Bn or An
OUTPUT
tPLZ
tPZL
VM
VM
VM
VOL + 0.3V
tPHZ
tPZH
VOL
VOH
VOH – 0.3V
OUTPUT
VM
SA00124
0V
SA00314
Waveform 1. Waveforms Showing the Input to Output
Propagation Delays
Waveform 2. Waveforms Showing the 3-State Output Enable
and Disable Times
2002 Dec 17
6
Philips Semiconductors
Product data
Octal transceiver with direction pin and
30 Ω series termination resistors (3-State)
74ABT2245
TEST CIRCUIT AND WAVEFORMS
VCC
7.0V
PULSE
GENERATOR
VIN
tW
90%
VOUT
VM
NEGATIVE
PULSE
10%
0V
tTLH (tR)
tTHL (tF)
CL
tTLH (tR)
RL
tTHL (tF)
90%
POSITIVE
PULSE
Test Circuit for 3-State Outputs
AMP (V)
90%
VM
VM
10%
10%
tW
SWITCH POSITION
TEST
SWITCH
tPLZ
closed
tPZL
closed
All other
open
AMP (V)
VM
10%
RL
D.U.T.
RT
90%
0V
VM = 1.5V
Input Pulse Definition
INPUT PULSE REQUIREMENTS
DEFINITIONS
FAMILY
RL = Load resistor; see AC CHARACTERISTICS for value.
CL = Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
74ABT
Amplitude
Rep. Rate
tW
tR
tF
3.0V
1MHz
500ns
2.5ns
2.5ns
SA00012
2002 Dec 17
7
Philips Semiconductors
Product data
Octal transceiver with direction pin and
30 Ω series termination resistors (3-State)
SO20: plastic small outline package; 20 leads; body width 7.5 mm
2002 Dec 17
8
74ABT2245
SOT163-1
Philips Semiconductors
Product data
Octal transceiver with direction pin and
30 Ω series termination resistors (3-State)
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
2002 Dec 17
9
74ABT2245
SOT339-1
Philips Semiconductors
Product data
Octal transceiver with direction pin and
30 Ω series termination resistors (3-State)
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
2002 Dec 17
10
74ABT2245
SOT360-1
Philips Semiconductors
Product data
Octal transceiver with direction pin and
30 Ω series termination resistors (3-State)
74ABT2245
REVISION HISTORY
Rev
Date
Description
_3
20021217
Product data (9397 750 10846); ECN 853-1761 29292 of 12 December 2002.
Supersedes data of 16 January 1998 (9397 750 03468).
Modifications:
• Ordering information table: remove “North America” column; remove 74ABT2245N package offering.
_2
19980116
Product specification (9397 750 03468); ECN 853-1761 18865 of 16 January 1998.
Supersedes data of 1995 September 06.
_1
19950906
Product specification; ECN 853-1761 15701 of 06 September 1995.
2002 Dec 17
11
Philips Semiconductors
Product data
Octal transceiver with direction pin and
30 Ω series termination resistors (3-State)
74ABT2245
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. 2002
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: 12-02
For sales offices addresses send e-mail to:
sales.addresses@www.semiconductors.philips.com.
Document order number:
2002 Dec 17
12
9397 750 10846