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INTEGRATED CIRCUITS
74ABT2244
Octal buffer/line driver with 30Ω series
termination resistors (3-State)
Product specification
Supersedes data of 1996 Oct 23
IC23 Data Handbook
1998 Jan 16
Page 2
Philips Semiconductors Product specification
Octal buffer/line driver with 30Ω series
termination resistors (3-State)
FEA TURES
•Octal bus interface
•3-State buffers
•Live insertion/extraction permitted
•Outputs include series resistance of 30Ω, making external
termination resistors unnecessary
•Output capability: +5mA/–32mA
•Latch-up protection exceeds 500mA per Jedec Std 17
•ESD protection exceeds 2000 V per MIL STD 883 Method 3015
and 200 V per Machine Model
•Power-up 3-State
•Same part as 74ABT244-1
•Inputs are disabled during 3-State mode
QUICK REFERENCE DATA
SYMBOL PARAMETER
C
t
PLH
t
PHL
C
OUT
I
CCZ
IN
Propagation delay
An to Yn
CL = 50pF; VCC = 5V
Input capacitance VI = 0V or V
Output capacitance Outputs disabled; VO = 0V or V
Total supply current Outputs disabled; VCC = 5.5V 50 µA
74ABT2244
DESCRIPTION
The 74ABT2244 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed.
The 74ABT2244 device is an octal buffer that is ideal for driving bus
lines. The device features two Output Enables (1OE
controlling four of the 3-State outputs.
The 74ABT2244 is designed with 30Ω 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 74ABT2244 is the same as the 74ABT244-1. The part number
has been changed to reflect industry standards.
CONDITIONS
T
= 25°C; GND = 0V
amb
TYPICAL UNIT
2.8
3.9
CC
CC
, 2OE), each
4 pF
7 pF
ns
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER
20-Pin Plastic DIP –40°C to +85°C 74ABT2244 N 74ABT2244 N SOT146-1
20-Pin plastic SO –40°C to +85°C 74ABT2244 D 74ABT2244 D SOT163-1
20-Pin Plastic SSOP Type II –40°C to +85°C 74ABT2244 DB 74ABT2244 DB SOT339-1
20-Pin Plastic TSSOP Type I –40°C to +85°C 74ABT2244 PW 7ABT2244PW DH SOT360-1
PIN CONFIGURATION
1
1OE
2
1A0
3
2Y0
4
1A1
5
2Y1
6
1A2
7
2Y2
8
1A3
9
2Y3 1Y3
10 11
GND
20
V
CC
2OE
19
1Y0
18
2A0
17
1Y1
16
2A1
15
1Y2
14
2A2
13
12
2A3
PIN DESCRIPTION
PIN NUMBER SYMBOL NAME AND FUNCTION
2, 4, 6, 8 1A0 – 1A3 Data inputs
11, 13, 15, 17 2A0 – 2A3 Data inputs
18, 16, 14, 12 1Y0 – 1Y3 Data outputs
9, 7, 5, 3 2Y0 – 2Y3 Data outputs
1, 19 1OE, 2OE Output enables
10 GND Ground (0V)
20 V
CC
Positive supply voltage
SA00148
1998 Jan 16 853-1627 18867
2
Page 3
Philips Semiconductors Product specification
Octal buffer/line driver with 30Ω series
termination resistors (3-State)
LOGIC SYMBOL
1A0
2
1A1
4
1A2
6
1A3
8
1OE
1
2A3
11
2A2
13
2A1
15
2A0
17
2OE
19
1Y0
1Y1
1Y2
1Y3
2Y3
2Y2
2Y1
2Y0
SA00149
18
16
14
12
9
7
5
3
LOGIC SYMBOL (IEEE/IEC)
1
2
4
6
8
19
11 9
13 7
15 5
17
EN
EN
74ABT2244
18
16
14
12
3
SA00150
SCHEMATIC OF EACH OUTPUT
V
CC
SA00237
OUTPUT
FUNCTION TABLE
INPUTS OUTPUTS
1OE 1An 2OE 2An 1Yn 2Yn
L L L L L L
L H L H H H
H X H X Z Z
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance “off” state
1998 Jan 16
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Philips Semiconductors Product specification
SYMBOL
PARAMETER
UNIT
Octal buffer/line driver with 30Ω series
termination resistors (3-State)
ABSOLUTE MAXIMUM RATINGS
SYMBOL
V
V
I
CC
I
IK
V
I
OK
OUT
OUT
T
stg
DC supply voltage –0.5 to +7.0 V
DC input diode current VI < 0 –18 mA
DC input voltage
I
DC output diode current VO < 0 –50 mA
DC output voltage
DC output current output in Low state 128 mA
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 ju nction
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.
PARAMETER CONDITIONS RATING UNIT
3
3
RECOMMENDED OPERATING CONDITIONS
V
CC
V
V
V
I
OH
I
OL
∆t/∆v Input transition rise or fall rate 0 5 ns/V
T
amb
DC supply voltage 4.5 5.5 V
Input voltage 0 V
I
High-level input voltage 2.0 V
IH
Low-level Input voltage 0.8 V
IL
High-level output current –32 mA
Low-level output current 12 mA
Operating free-air temperature range –40 +85 °C
1, 2
–1.2 to +7.0 V
output in Off or High state –0.5 to +5.5 V
LIMITS
Min Max
74ABT2244
CC
V
1998 Jan 16
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Philips Semiconductors Product specification
VOLLow-level out ut voltage
Octal buffer/line driver with 30Ω series
termination resistors (3-State)
DC ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER TEST CONDITIONS T
V
V
I
OFF
I
PU/PD
I
OZH
I
OZL
I
CEX
I
CCH
I
CCL
I
CCZ
∆I
Input clamp voltage VCC = 4.5V; IIK = –18mA –0.9 –1.2 –1.2 V
IK
VCC = 4.5V; IOH = –3mA; VI = VIL or V
High-level output voltage VCC = 5.0V; IOH = –3mA; VI = VIL or V
OH
VCC = 4.5V; IOH = –32mA; VI = VIL or V
p
I
Input leakage current VCC = 5.5V; VI = GND or 5.5V ±0.01 ±1.0 ±1.0 µA
I
VCC = 4.5V; IOL = 5mA; VI = VIL or V
VCC = 4.5V; IOL = 12mA; VI = VIL or V
IH
IH
IH
IH
IH
Power-off leakage current VCC = 0.0V; VO or VI ≤ 4.5V 5.0 100 100 µA
Power-up/down 3-State
output current
3
3-State output High current VCC = 5.5V; VO = 2.7V; VI = VIL or V
3-State output Low current VCC = 5.5V; VO = 0.5V; VI = VIL or V
Output High leakage current VCC = 5.5V; VO = 5.5V; VI = GND or V
I
O
Output current
1
Quiescent supply current VCC = 5.5V; Outputs Low, VI = GND or V
VCC = 2.1V; VO = 0.5V; VI = GND or VCC;
VOE = Don’t care
IH
IH
CC
VCC = 5.5V; VO = 2.5V –50 –100 –180 –50 –180 mA
VCC = 5.5V; Outputs High, VI = GND or V
CC
CC
VCC = 5.5V; Outputs 3-State;
VI = GND or V
CC
Outputs enabled, one input at 3.4V ,
other inputs at VCC or GND; VCC = 5.5V
Additional supply current per
input pin
2
CC
Outputs 3-State, one enable input at 3.4V ,
other inputs at VCC or GND; VCC = 5.5V
Outputs 3-State, one enable input at 3.4V ,
other inputs at VCC or GND; VCC = 5.5V
74ABT2244
LIMITS
T
= –40°C
= +25°C
amb
Min Typ Max Min Max
2.5 2.9 2.5 V
3.0 3.4 3.0 V
2.0 2.4 2.0 V
0.32 0.55 0.55 V
0.8 0.8 V
5.0 50 50 µA
0.1 50 50 µA
–0.1 –50 –50 µA
5.0 50 50 µA
50 250 250 µA
24 30 30 mA
50 250 250 µA
0.5 1.5 1.5 mA
50 250 250 µA
0.5 1.5 1.5 mA
amb
to +85°C
UNIT
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 3.4V.
3. This parameter is valid for any VCC between 0V and 2.1V , with a transition time of up to 10msec. From VCC = 2.1V to VCC = 5V ± 10% a
transition time of up to 100µsec is permitted.
AC CHARACTERISTICS
GND = 0V; tR = tF = 2.5ns; CL = 50pF, RL = 500Ω
SYMBOL PARAMETER WAVEFORM
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
1998 Jan 16
Propagation delay
An to Yn
Output enable time
to High and Low level
Output disable time
from High and Low level
LIMITS
T
amb
V
CC
= +25°C
= +5.0V
T
= –40°C to +85°C
amb
V
= +5.0V ±0.5V
CC
UNIT
Min Typ Max Min Max
1
2
2
1.0
1.0
1.1
2.1
2.1
1.7
2.8
3.9
3.3
5.0
3.7
3.4
4.3
5.3
4.8
7.3
5.6
5.3
1.0
1.0
1.1
2.1
2.1
1.7
4.7
5.6
5.5
8.3
6.6
5.8
ns
ns
ns
5
Page 6
Philips Semiconductors Product specification
Octal buffer/line driver with 30Ω series
termination resistors (3-State)
AC WAVEFORMS
VM = 1.5V, VIN = GND to 3.0V
3 V
INPUT
OUTPUT
1.5V
t
PLH
1.5V 1.5V
Waveform 1. W aveforms Showing the Input (An) to Output (Yn)
Propagation Delays
1.5V
0 V
t
PHL
V
OH
V
OL
SA00028
74ABT2244
+ 0.3V
SA00029
3V
0V
3.5V
V
V
0V
OL
OH
Output Control
(Low-level
enabling
Output
Waveform 1
S1 at 7 V
(see Note)
Output
Waveform 2
S1 at Open
(see Note)
Note:
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.
1.5 V 1.5 V
t
PZL
1.5 V
t
PZH
1.5 V
t
PLZ
V
OL
t
PHZ
VOH – 0.3V
Waveform 2. Waveforms Showing the 3-State Output Enable
and Disable Times
TEST CIRCUIT AND WAVEFORMS
From Output
Under Test
C
= 50 pF
L
DEFINITIONS
= Load capacitance includes jig and probe capacitance;
C
L
see AC CHARACTERISTICS for value.
500 Ω
500 Ω
Load Circuit
TEST S1
t
pd
t
PLZ/tPZL
t
PHZ/tPZH
open
7 V
open
7 V
S1
Open
GND
SA00012
1998 Jan 16
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Page 7
Philips Semiconductors Product specification
Octal buffer/line driver with 30Ω series
termination resistors (3-State)
DIP20: plastic dual in-line package; 20 leads (300 mil) SOT146-1
74ABT2244
1998 Jan 16
7
Page 8
Philips Semiconductors Product specification
Octal buffer/line driver with 30Ω series
termination resistors (3-State)
SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1
74ABT2244
1998 Jan 16
8
Page 9
Philips Semiconductors Product specification
Octal buffer/line driver with 30Ω series
termination resistors (3-State)
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm SOT339-1
74ABT2244
1998 Jan 16
9
Page 10
Philips Semiconductors Product specification
Octal buffer/line driver with 30Ω series
termination resistors (3-State)
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT360-1
74ABT2244
1998 Jan 16
10
Page 11
Philips Semiconductors Product specification
Octal buffer/line driver with 30Ω series
termination resistors (3-State)
NOTES
74ABT2244
1998 Jan 16
11
Page 12
Philips Semiconductors Product specification
Octal buffer/line driver with 30Ω series
termination resistors (3-State)
Data sheet status
Data sheet
status
Objective
specification
Preliminary
specification
Product
specification
Product
status
Development
Qualification
Production
Definition
This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.
This data sheet contains preliminary data, and supplementary data will be published at a later date.
Philips Semiconductors reserves the right to make chages at any time without notice in order to
improve design and supply the best possible product.
This data sheet contains final specifications. Philips Semiconductors reserves the right to make
changes at any time without notice in order to improve design and supply the best possible product.
[1]
74ABT2244
[1] Please consult the most recently issued datasheet before initiating or completing a design.
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 134). 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, without notice, in the products, including circuits, standard
cells, and/or software, described or contained herein in order to improve design and/or performance. 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.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
print code Date of release: 05-96
Document order number: 9397-750-03466
yyyy mmm dd
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