74F2241 [NXP]
Octal inverter buffer with 30ohm equivalent output termination 3-State; 与30ohm相当于输出端接三态八路逆变器缓冲
| 型号： | 74F2241 |
| 厂家： | 
NXP |
| 描述： | Octal inverter buffer with 30ohm equivalent output termination 3-State |
| 文件： | 总10页 (文件大小：97K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
74F2240
Octal inverter buffer with 30Ω equivalent
output termination (3-State)
74F2241
Octal buffer with 30Ω equivalent output
termination (3-State)
Product specification
IC15 Data Handbook
1990 Dec 13
Philips
Semiconductors
Philips Semiconductors
Product specification
Octal buffers
74F2240, 74F2241
FEATURES
PIN CONFIGURATION
• Octal bus interface
74F2240
1
2
3
4
5
6
7
8
9
20
V
OEa
Ia0
• 30Ω output termination ideal for driving DRAM
• 15mA source current
CC
19
OEb
18
Yb0
Ia1
Ya0
17
Ib0
DESCRIPTION
16
Yb1
Ia2
Ya1
The 74F2240 and 74F2241 are octal buffers that are ideal for
driving dynamic DRAM with impedance matching. The outputs are
all capable of sinking 5mA and sourcing up to 15mA. The device
features two output enables, each controlling four of the 3-state
outputs.
15
Ib1
14
Yb2
Ia3
Ya2
13
Ib2
12
Yb3
Ya3
GND 10
11
Ib3
TYPICAL
PROPAGATION
DELAY
TYPICAL
SUPPLY CURRENT
(TOTAL)
SF00561
TYPE
74F2240
74F2241
4.3ns
4.5ns
37mA
30mA
LOGIC SYMBOL
74F2240
17 15 13 11
2
4
6
8
ORDERING INFORMATION
ORDER CODE
COMMERCIAL RANGE
= 5V ±10%,
Ia0 Ia1 Ia2 Ia3 Ib0 Ib1 Ib2 Ib3
DESCRIPTION
PKG DWG #
V
CC
1
OEa
OEb
T
amb
= 0°C to +70°C
19
20-pin plastic DIP N74F2240N, N74F2241N
20-pin plastic SOL N74F2240D, N74F2241D
SOT146-1
SOT163-1
Ya0 Ya1 Ya2 Ya3 Yb0 Yb1 Yb2 Yb3
18 16 14 12
3
5
7
9
INPUT AND OUTPUT LOADING
AND FAN-OUT TABLE
V
= Pin 20
CC
GND = Pin 10
SF00562
LOAD
VALUE
HIGH/LOW
74F (U.L.)
HIGH/LOW
PINS
DESCRIPTION
Ian, Ibn
Data inputs
1.0/0.33
1.0/0.33
20µA/0.2mA
20µA/0.2mA
IEC/IEEE SYMBOL
Output enable inputs
(active Low)
74F2240
OEa, OEb
1
EN1
EN2
19
Output enable input
(74F2241)
OEb
1.0/0.33
20µA/0.2mA
15mA/5mA
15mA/5mA
Yan, Ybn Data outputs (74F2241)
750/8.33
750/8.33
2
18
16
14
12
3
2D
1
4
Yan, Ybn Data outputs (74F2240)
6
NOTE: One (1.0) FAST unit load is defined as: 20µA in the High
state and 0.6mA in the Low state.
8
17
15
13
11
2
5
7
9
SF00563
2
December 13, 1990
853-1524 01255
Philips Semiconductors
Product specification
Octal buffers
74F2240, 74F2241
PIN CONFIGURATION
LOGIC DIAGRAM FOR 74F2240
74F2241
2
5
7
9
17
15
13
11
10
18
15
14
12
2
4
6
8
1
Ib0
Yb0
Yb1
Yb2
Yb3
Ia0
Ya0
Ya1
Ya2
Ya3
V
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
11
OEa
Ia0
CC
OEb
Ya0
Ib0
Ib1
Ia1
Yb0
Ia1
Ib2
Ia2
Yb1
Ia2
Ya1
Ib1
Ib3
Ia3
Yb2
Ia3
Ya2
Ib2
OEb
OEa
Yb3
Ya3
Ib3
V
= Pin 20
GND = Pin 10
CC
SF00567
GND 10
SF00564
LOGIC DIAGRAM FOR 74F2241
LOGIC SYMBOL
2
17
15
13
11
10
18
15
14
12
2
4
6
8
1
Ib0
Ib1
Ib2
Ib
Yb0
Ia0
Ya0
Ya1
Ya2
Ya3
74F2241
17 15 13 11
2
4
6
8
5
Yb1
Ia1
7
Ia0 Ia1 Ia2 Ia3 Ib0 Ib1 Ib2 Ib3
Yb2
Ia2
1
OEa
OEb
9
19
Yb3
Ia3
Ya0 Ya1 Ya2 Ya3 Yb0 Yb1 Yb2 Yb3
OEb
OEa
V
= Pin 20
CC
GND = Pin 10
18 16 14 12
3
5
7
9
SF00568
V
= Pin 20
CC
GND = Pin 10
SF00565
FUNCTION TABLE FOR 74F2240
INPUTS
OUTPUTS
IEC/IEEE SYMBOL
OEa
L
Ia
L
OEb
L
Ib
L
Ya
Yb
H
L
74F2241
H
L
1
EN1
EN2
L
H
X
L
H
X
19
H
H
Z
Z
2
18
Notes to function table for 74F2240
2D
1
4
16
14
12
3
H = High voltage level
L
X
Z
=
=
=
Low voltage level
Don’t care
High impedance ”off” state
6
8
17
15
13
11
2
5
FUNCTION TABLE FOR 74F2241
7
INPUTS
OUTPUTS
9
SF00566
OEa
L
Ia
L
OEb
H
Ib
L
Ya
L
Yb
L
L
H
X
H
H
X
H
Z
H
Z
H
L
Notes to function table for 74F2241
H = High voltage level
L
X
Z
=
=
=
Low voltage level
Don’t care
High impedance ”off” state
3
December 13, 1990
Philips Semiconductors
Product specification
Octal buffers
74F2240, 74F2241
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the
operating free air temperature range.)
SYMBOL
PARAMETER
RATING
–0.5 to +7.0
–0.5 to +7.0
–30 to +5
UNIT
V
V
CC
Supply voltage
Input voltage
Input current
V
IN
V
I
IN
mA
V
I
Voltage applied to output in high output state
Current applied to output in low output state
–0.5 to V
V
OUT
CC
10
mA
°C
°C
OUT
T
amb
Operating free air temperature range
Storage temperature range
0 to +70
T
–65 to +150
stg
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
MIN
4.5
NOM
MAX
V
Supply voltage
5.0
5.5
V
V
CC
V
High–level input voltage
Low–level input voltage
Input clamp current
2.0
IH
V
0.8
–18
–15
5
V
IL
I
mA
mA
mA
Ik
I
High–level output current
Low–level output current
OH
I
OL
T
amb
Operating free air temperature range
0
+70
°C
4
December 13, 1990
Philips Semiconductors
Product specification
Octal buffers
74F2240, 74F2241
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
SYMBOL
PARAMETER
TEST
LIMITS
UNIT
1
2
CONDITIONS
MIN TYP
MAX
±10%V
V
V
V
= MIN,
I
= –3mA
2.4
2.7
2.0
2.0
V
V
V
V
C
CC
OH
C
V
OH
High-level output voltage
±5%V
= MAX,
= MIN
3.4
CC
IL
±10%V
I
=
C
IH
OH
–15mA
C
±5%V
CC
V
V
= MIN,
= MAX,
±10%V
CC
IL
C
V
Low-level output voltage
I
OL
= MAX
0.50
0.50
V
OL
C
V
V
V
V
V
= MIN,
±5%V
0.42
V
V
IH
CC
V
Input clamp voltage
= MIN, I = I
IK
–0.73 -1.2
IK
CC
CC
CC
CC
I
I
Input current at maximum input voltage
High–level input current
= MAX, V = 7.0V
100
20
µA
µA
mA
I
I
I
IH
= MAX, V = 2.7V
I
I
Low–level input current
= MAX, V = 0.5V
–0.2
IL
I
Off–state output current,
high–level voltage applied
µA
µA
I
V
= MAX, V = 2.7V
50
OZH
CC
O
Off–state output current,
low–level voltage applied
I
V
V
= MAX, V = 0.5V
–50
OZL
CC
O
3
I
Short–circuit output current
= MAX
= MAX
-60
-150
mA
mA
mA
mA
mA
mA
mA
OS
CC
I
I
25
53
35
19
45
27
35
75
45
30
65
40
CCH
74F2240
I
V
CC
CCL
CCZ
CCH
I
Supply current (total)
CC
I
I
74F2241
I
V
CC
= MAX
CCL
CCZ
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.
2. All typical values are at V = 5V, T
= 25°C.
amb
CC
3. Not more than one output should be shorted at a time. For testing I , the use of high-speed test apparatus and/or sample-and-hold
OS
techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting
of a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any
sequence of parameter tests, I tests should be performed last.
OS
AC ELECTRICAL CHARACTERISTICS
LIMITS
T
T
= +25°C
= 0°C to +70°C
= +5.0V ± 10%
amb
amb
V
SYMBOL
PARAMETER
TEST
V
= +5.0V
UNIT
CC
CC
CONDITION
C = 50pF, R = 500Ω
C = 50pF, R = 500Ω
L L
L
L
MIN
TYP
MAX
MIN
MAX
t
t
Propagation delay
Ian, Ibn to Yn
3.0
2.0
5.0
3.5
7.0
5.5
2.5
2.0
8.0
6.0
PLH
PHL
Waveform 1
ns
ns
ns
ns
ns
ns
t
t
Output enable time
to high or low level
Waveform 3
Waveform 4
3.0
3.5
4.5
5.0
7.0
8.0
2.5
3.0
8.0
9.0
PZH
PZL
74F2240
74F2241
t
t
Output disable time
from high or low level
Waveform 3
Waveform 4
2.0
1.0
3.5
2.5
6.5
5.5
1.5
1.0
7.0
5.5
PHZ
PLZ
t
t
Propagation delay
Ian, Ibn to Yn
3.0
2.5
4.5
4.5
7.0
6.5
2.5
2.5
8.0
7.5
PLH
PHL
Waveform 2
t
t
Output enable time
to high or low level
Waveform 3
Waveform 4
3.0
3.5
5.0
5.5
7.0
7.5
2.0
3.0
8.0
8.5
PZH
PZL
t
t
Output disable time
from high or low level
Waveform 3
Waveform 4
2.0
1.5
4.0
3.5
6.0
6.0
1.5
1.0
7.0
6.5
PHZ
PLZ
5
December 13, 1990
Philips Semiconductors
Product specification
Octal buffers
74F2240, 74F2241
AC WAVEFORMS
Ian, Ibn
V
Ian, Ibn
V
M
V
V
M
M
M
t
t
t
t
PHL
PLH
PHL
PLH
Yn
V
V
M
V
V
M
M
Yn
M
SF00328
SF00329
Waveform 1. Propagation delay for inverting outputs
Waveform 2. Propagation delay for non–inverting outputs
OEn
OEn
V
V
M
V
t
V
M
M
M
OEb
OEb
V
-0.3V
0V
OH
t
t
PHZ
t
PZH
PZL
PLZ
3.5V
Yn, Yn
V
V
M
M
Yn, Yn
V
+0.3V
OL
SF00330
SF00331
Waveform 3. 3-state output enable time to high level and output
disable time from high level
Waveform 4. 3-state output enable time to low level and output
disable time from low level
NOTES:
For all waveforms, V = 1.5V.
M
The shaded areas indicate when the input is permitted to change for predictable output performance.
TEST CIRCUIT AND WAVEFORMS
V
CC
t
w
AMP (V)
0V
7.0V
90%
90%
NEGATIVE
PULSE
V
V
M
R
M
L
V
V
OUT
IN
10%
10%
PULSE
GENERATOR
D.U.T.
t
t )
t
t )
THL ( f
TLH ( r
R
C
R
L
T
L
t
t )
t
t )
TLH ( r
THL ( f
AMP (V)
0V
90%
M
90%
POSITIVE
PULSE
V
V
M
Test Circuit for Open Collector Outputs
10%
10%
t
w
SWITCH POSITION
TEST
SWITCH
closed
closed
open
Input Pulse Definition
t
t
PLZ
PZL
All other
DEFINITIONS:
R
L
C
L
R
T
=
=
=
Load resistor;
INPUT PULSE REQUIREMENTS
see AC electrical characteristics for value.
Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
Termination resistance should be equal to Z
pulse generators.
family
V
M
rep. rate
t
w
t
t
THL
amplitude
TLH
of
OUT
2.5ns
2.5ns
74F
3.0V
1.5V
1MHz
500ns
SF00128
6
December 13, 1990
Philips Semiconductors
Product specification
Octal buffers
74F2240/74F2241
DIP20: plastic dual in-line package; 20 leads (300 mil)
SOT146-1
7
1990 Dec 13
Philips Semiconductors
Product specification
Octal buffers
74F2240/74F2241
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
8
1990 Dec 13
Philips Semiconductors
Product specification
Octal buffers
74F2240/74F2241
NOTES
9
1990 Dec 13
Philips Semiconductors
Product specification
Octal buffers
74F2240/74F2241
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
Production
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
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: 10-98
9397-750-05197
Document order number:
Philips
Semiconductors
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