74ABT2245 [NXP]
Octal transceiver with direction pin with 30ohm series termination resistors 3-State; 八路收发器方向引脚30ohm串联端接电阻三态
| 型号： | 74ABT2245 |
| 厂家： | 
NXP |
| 描述： | Octal transceiver with direction pin with 30ohm series termination resistors 3-State |
| 文件： | 总12页 (文件大小：111K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
74ABT2245
Octal transceiver with direction pin with
30Ω series termination resistors (3-State)
Product specification
Supersedes data of 1996 Sep 10
1998 Jan 16
IC23 Data Handbook
Philips
Semiconductors
Philips Semiconductors
Product specification
Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)
74ABT2245
FEATURES
• Octal bidirectional bus interface
DESCRIPTION
The 74ABT2245 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed.
• 3-State buffers
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.
• Output capability: +12mA/–32mA
• Latch-up protection exceeds 500mA per Jedec Std 17
• ESD protection exceeds 2000 V per MIL STD 833 Method 3015
and 200 V per Machine Model
The 74ABT2245 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.
• Power-up 3-State
• Live insertion/extraction permitted
• Same as 74ABT245-1
The 74ABT2245 is the same as the 74ABT245-1. The part number
has been changed to reflect industry standards.
• Outputs include series resistance of 30Ω, making external
termination resistors unnecessary
• Inputs are disabled during 3-State mode
QUICK REFERENCE DATA
CONDITIONS
= 25°C; GND = 0V
SYMBOL
PARAMETER
TYPICAL
UNIT
T
amb
t
t
Propagation delay
PLH
PHL
C = 50pF; V = 5V
3.9
ns
L
CC
An to Bn or Bn to An
Input capacitance DIR, OE
I/O pin capacitance
C
V = 0V or V
I CC
4
7
pF
pF
µA
IN
C
Outputs disabled; V = 0V or V
O CC
I/O
I
Total supply current
Outputs disabled; V =5.5V
50
CCZ
CC
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE OUTSIDE NORTH AMERICA
NORTH AMERICA
DWG NUMBER
SOT146-1
20-Pin Plastic DIP
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
74ABT2245 N
74ABT2245 D
74ABT2245 DB
74ABT2245 PW
74ABT2245 N
74ABT2245 D
20-Pin plastic SO
SOT163-1
20-Pin Plastic SSOP Type II
20-Pin Plastic TSSOP Type I
74ABT2245 DB
7ABT2245PW DH
SOT339-1
SOT360-1
PIN CONFIGURATION
PIN DESCRIPTION
PIN NUMBER
1
SYMBOL
NAME AND FUNCTION
Direction control input
20
V
DIR
A0
A1
A2
A3
A4
A5
A6
A7
1
2
3
4
5
6
7
8
9
CC
DIR
19 OE
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
11 B7
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)
Output enable input
(active-Low)
19
OE
10
20
GND
Ground (0V)
V
CC
Positive supply voltage
GND 10
SA00121
2
1998 Jan 16
853-1761 18865
Philips Semiconductors
Product specification
Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)
74ABT2245
LOGIC SYMBOL
FUNCTION TABLE
INPUTS
INPUTS/OUTPUTS
1
DIR
19
OE
L
DIR
L
An
An = Bn
Inputs
Z
Bn
Inputs
Bn = An
Z
OE
2
A0
18
17
16
15
14
13
12
11
L
H
B0
B1
B2
B3
B4
B5
B6
B7
3
A1
H
X
4
A2
H = High voltage level
L
X
Z
= Low voltage level
= Don’t care
= High impedance ”off” state
5
A3
6
A4
SCHEMATIC OF EACH OUTPUT
7
A5
V
CC
8
A6
9
A7
SA00122
OUTPUT
LOGIC SYMBOL IEEE/IEC
19
G3
3 EN1 (BA)
3 EN2 (AB)
1
SA00237
1
2
18
2
3
4
5
6
7
8
9
17
16
15
14
13
12
11
SA00313
3
1998 Jan 16
Philips Semiconductors
Product specification
Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)
74ABT2245
1, 2
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
DC supply voltage
CONDITIONS
RATING
UNIT
V
–0.5 to +7.0
–18
V
mA
V
CC
IK
I
DC input diode current
V < 0
I
3
V
I
DC input voltage
–1.2 to +7.0
–50
I
DC output diode current
V
O
< 0
mA
V
OK
3
V
DC output voltage
output in Off or High state
output in Low state
–0.5 to +5.5
128
OUT
OUT
I
DC output current
mA
°C
T
stg
Storage temperature range
–65 to 150
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
PARAMETER
LIMITS
UNIT
Min
4.5
0
Max
V
DC supply voltage
5.5
V
V
CC
V
Input voltage
V
CC
I
V
High-level input voltage
Low-level Input voltage
High-level output current
Low-level output current
Input transition rise or fall rate
2.0
V
IH
V
0.8
–32
12
V
IL
I
mA
mA
ns/V
°C
OH
I
OL
∆t/∆v
0
5
T
amb
Operating free-air temperature range
–40
+85
4
1998 Jan 16
Philips Semiconductors
Product specification
Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)
74ABT2245
DC ELECTRICAL CHARACTERISTICS
LIMITS
T
= –40°C
to +85°C
amb
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
= +25°C
UNIT
Min
Typ
Max
Min
Max
V
Input clamp voltage
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 4.5V; I = –18mA
–0.9
2.9
–1.2
–1.2
V
V
V
V
V
V
IK
IK
= 4.5V; I = –3mA; V = V or V
2.5
3.0
2.0
2.5
3.0
2.0
OH
I
IL
IH
IH
V
OH
High-level output voltage
= 5.0V; I = –3mA; V = V or V
3.4
OH
I
IL
= 4.5V; I = –32mA; V = V or V
IH
2.4
OH
I
IL
= 4.5V; I = 5mA; V = V or V
IH
0.32
0.5
0.55
0.8
0.55
0.8
OL
I
IL
V
OL
Low-level output voltage
= 4.5V; I = 12mA; V = V or V
IH
OL
I
IL
Control pins
Data pins
V
V
= 5.5V; V = GND or 5.5V
±0.01
±5
±1.0
±1.0
µA
µA
CC
I
Input leakage
current
I
I
= 5.5V; V = GND or 5.5V
±100
±100
CC
I
I
Power-off leakage current
±5.0
±5.0
±100
±50
±100
±50
µA
µA
V
= 0.0V; V or V ≤ 4.5V
OFF
CC
I
O
Power-up/down 3-State
V
CC
V
OE
= 2.1V; V = 0.5V; V = GND or V
;
O
I
CC
CC
I
/I
PU PD
3
output current
= Don’t care
I
+ I
+ I
3-State output High current
3-State output Low current
Output high leakage current
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 5.5V; V = 2.7V; V = V or V
5.0
–5.0
5.0
50
–50
50
50
–50
50
µA
µA
µA
mA
µA
mA
IH
OZH
OZL
O
I
IL
IH
IH
I
= 5.5V; V = 0.5V; V = V or V
O I IL
IL
I
= 5.5V; V = 5.5V; V = GND or V
O I
CEX
1
I
O
Output current
= 5.5V; V = 2.5V
–40
–100
50
–180
250
30
–40
–180
250
30
O
I
= 5.5V; Outputs High, V = GND or V
CCH
I
CC
I
= 5.5V; Outputs Low, V = GND or V
24
CCL
I
CC
Quiescent supply current
= 5.5V; Outputs 3-State;
I
50
0.5
50
250
1.5
250
1.5
250
1.5
250
1.5
µA
mA
µA
CCZ
V = GND or V
I
CC
Outputs enabled, one input at 3.4V, other
inputs at V or GND; V = 5.5V
CC
CC
Additional supply current per Outputs 3-State, one data input at 3.4V,
∆I
CC
2
input pin
other inputs at V or GND; V = 5.5V
CC CC
Outputs 3-State, one enable input at 3.4V,
other inputs at V or GND; V = 5.5V
0.5
mA
CC
CC
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 V between 0V and 2.1V with a transition time of up to 10msec. From V = 2.1V to V = 5V ± 10%, a
CC
CC
CC
transition time of up to 100µsec is permitted.
5
1998 Jan 16
Philips Semiconductors
Product specification
Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)
74ABT2245
AC CHARACTERISTICS
GND = 0V; t = t = 2.5ns; C = 50pF, R = 500Ω
R
F
L
L
LIMITS
T
V
= +25°C
= +5.0V
T
= –40°C to +85°C
amb
CC
amb
V
SYMBOL
PARAMETER
WAVEFORM
UNIT
= +5.0V ±0.5V
CC
Min
Typ
Max
Min
Max
t
t
Propagation delay
An to Bn or Bn to An
1.0
1.0
2.8
3.9
4.2
5.0
1.0
1.0
4.7
5.4
PLH
PHL
1
2
2
ns
ns
ns
t
Output enable time
to High and Low level
1.3
3.0
3.5
5.5
4.6
7.0
1.3
3.0
5.5
7.8
PZH
t
PZL
t
Output disable time
from High and Low Level
1.5
1.0
4.0
3.4
5.4
4.6
1.5
1.0
6.3
5.0
PHZ
t
PLZ
AC WAVEFORMS
V
M
= 1.5V, V = GND to 3.0V
IN
OE
INPUT
V
V
M
M
t
An or Bn
V
V
M
t
M
t
INPUT
t
PLZ
PZL
3.5V
PLH
PHL
OUTPUT
OUTPUT
V
V
M
V
V
+ 0.3V
– 0.3V
OL
OL
Bn or An
OUTPUT
t
V
t
PHZ
M
PZH
V
M
V
V
OH
OH
M
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
TEST CIRCUIT AND WAVEFORMS
7 V
500 Ω
S1
From Output
Under Test
Open
GND
500 Ω
C
= 50 pF
L
Load Circuit
TEST
S1
t
open
7 V
pd
t
/t
PLZ PZL
t
/t
open
PHZ PZH
DEFINITIONS
C
=
Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
L
SA00012
6
1998 Jan 16
Philips Semiconductors
Product specification
Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)
74ABT2245
DIP20: plastic dual in-line package; 20 leads (300 mil)
SOT146-1
7
1998 Jan 16
Philips Semiconductors
Product specification
Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)
74ABT2245
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
8
1998 Jan 16
Philips Semiconductors
Product specification
Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)
74ABT2245
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
SOT339-1
9
1998 Jan 16
Philips Semiconductors
Product specification
Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)
74ABT2245
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
SOT360-1
10
1998 Jan 16
Philips Semiconductors
Product specification
Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)
74ABT2245
NOTES
11
1998 Jan 16
Philips Semiconductors
Product specification
Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)
74ABT2245
Data sheet status
[1]
Data sheet
status
Product
status
Definition
Objective
specification
Development
This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.
Preliminary
specification
Qualification
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.
Product
specification
Production
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] 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.
Righttomakechanges—PhilipsSemiconductorsreservestherighttomakechanges, withoutnotice, intheproducts, includingcircuits,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
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
Sunnyvale, California 94088–3409
Telephone 800-234-7381
print code
Date of release: 05-96
9397-750-03468
Document order number:
Philips
Semiconductors
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