SNJ54F245FKR [TI]
F/FAST SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CQCC20, CERAMIC, LCC-20;
| 型号： | SNJ54F245FKR |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | F/FAST SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CQCC20, CERAMIC, LCC-20 输出元件 逻辑集成电路 |
| 文件： | 总10页 (文件大小：415K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
54F245,74F245
54F245 74F245 Octal Bidirectional Transceiver with TRI-STATE Outputs
Literature Number: SNOS177A
June 1995
54F/74F245
Octal Bidirectional Transceiver with TRI-STATE Outputs
É
General Description
Features
Y
Non-inverting buffers
The ’F245 contains eight non-inverting bidirectional buffers
with TRI-STATE outputs and is intended for bus-oriented
applications. Current sinking capability is 24 mA (20 mA Mil)
at the A ports and 64 mA (48 mA Mil) at the B ports. The
Transmit/Receive (T/R) input determines the direction of
data flow through the bidirectional transceiver. Transmit (ac-
tive HIGH) enables data from A ports to B ports; Receive
(active LOW) enables data from B ports to A ports. The
Output Enable input, when HIGH, disables both A and B
ports by placing them in a High Z condition.
Y
Bidirectional data path
Y
A outputs sink 24 mA (20 mA Mil)
Y
B outputs sink 64 mA (48 mA Mil)
Y
Guaranteed 4000V minimum ESD protection
Package
Number
Commercial
74F245PC
Military
Package Descriptio
N20A
J20A
20-Lead (0.300 ed Dual-In-Line
×
54F245DM (Note 2)
20-LeCeramic -Line
74F245SC (Note 1)
74F245SJ (Note 1)
74F245MSA (Note 1)
M20B
M20D
MSA20
W20A
E20A
20-Lead (00 WiMolded mall Outline, JEDEC
×
20-Lead (0.30Wide) Molded Small Outline, EIAJ
lded Snk Small Outline, EIAJ Type II
54F245FM (Note 2)
54F245LM (Note 2)
ck
ic Leadless Chip Carrier, Type C
e
Note 1: Devices also available in 13 reel. Use suffix
SCX, and MSAX.
×
Note 2: Military grade device with environmental and burn-in ocessing. Usfix
e
DMQB, FMQB and LMQB.
Logic Symbols
IEEE/IEC
TL/F/9503–3
TL/F/9503–4
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation
TL/F/9503
RRD-B30M75/Printed in U. S. A.
Connection Diagrams
Pin Assignment
for LCC
Pin Assignment for
DIP, SOIC, SSOP and Flatpak
TL/F/9503–1
503–2
Unit Loading/Fan Out
54F/74F
Pin Names
Description
U.L.
Input I /I
IH IL
Output I /I
HIGH/LOW
OH
b
20 / 1.2 m
20 mA1.2 mA
OE
Output Enable Input (Active LOW)
Transmit/Receive Input
Side A Inputs or
1.0/2.0
1.0/2.0
T/R
b
A –A
0
3.5/1.083
70 mA/ mA
7
7
b
TRI-STATE Outputs
Side B Inputs or
150/40(38.3)
3.5/1.083
3 mA/24 mA mA)
0.65 m
B –B
0
(48 mA)
TRI-STATE Outputs
600/106.6(80)
Truth Table
Inputs
OE
Output
T/R
L
L
L
H
X
Bus B Data to Bus A
BuData
High a
H
e
e
e
H
L
HIGH Voltage Level
LOW Voltage Level
Immaterial
X
2
Current Applied to Output
in LOW State (Max)
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
twice the rated I (mA)
OL
ESD Last Passing Voltage (Min)
4000V
Note 1: Absolute maximum ratings are values beyond which the device may
be damaged or have its useful life impaired. Functional operation under
these conditions is not implied.
b
b
a
65 C to 150 C
Storage Temperature
§
§
§
§
§
Note 2: Either voltage limit or current limit is sufficient to protect inputs.
a
55 C to 125 C
Ambient Temperature under Bias
§
b
b
a
55 C to 175 C
Junction Temperature under Bias
Plastic
§
§
Recommended Operating
Conditions
Free Air Ambient Temperature
Military
Commercial
a
55 C to 150 C
V
Pin Potential to
CC
Ground Pin
b
a
0.5V to 7.0V
b
a
0.5V to 7.0V
b a
55 C to 125 C
Input Voltage (Note 2)
Input Current (Note 2)
Voltage Applied to Output
§
0 C to 70 C
§
§
a
§
b
a
30 mA to 5.0 mA
Supply Voltage
Military
Commercial
a
a
4.5V to 5.5V
e
in HIGH State (with V
Standard Output
TRI-STATE Output
0V)
CC
a
a
4.5V to 5.5V
b
0.5V to 5.5V
0.5V to V
CC
b
a
DC Electrical Characteristics
54F/74F
Symbol
Parameter
Units
C
ndition
Min
Typ
Max
V
Input HIGH Voltage
2.0
V
V
RecognizHIGH Signal
Rognized as a LOW Signal
IH
V
V
V
Input LOW Voltage
0.8
IL
b
e b
18 mA
Input Clamp Diode Voltage
1.2
I
IN
CD
OH
e b
e b
e b
e b
e b
Output HIGH
Voltage
54F 10% V
2.4
2.0
2.4
2.0
2.7
I
I
I
3 mA (A )
n
CC
CC
CC
CC
OH
OH
OH
OH
OH
54F 10% V
74F 10% V
74F 10% V
12 mA (B )
n
3 mA (A )
n
V
V
15 mA (B )
n
74F 5% V
CC
3 mA (A )
n
e
e
e
e
V
OL
Output LOW
Voltage
54F 10% V
54F 10% V
74F 10% V
74F 10% V
I
I
I
I
20 mA (A )
n
CC
CC
CC
CC
OL
OL
OL
OL
48 mA (B )
n
Min
24 mA (A )
n
64 mA (B )
n
Input HIGH
Current
54F
74F
20.0
5.0
e
e
e
I
I
I
I
mA
mA
mA
mA
V
Max
Max
Max
Max
0.0
V
V
V
V
2.7V
IH
IN
IN
IN
Input HIGH Current 54F
Breakdown Te74
100
7.0
7.0V (OE, T/R)
BVI
Input HIGH Curre5
1.0
0.5
5.5 V (A , B )
n
BVIT
CEX
n
Breakdown (I/O)
O
54F
74F
250
50
e
V
CC
(A , B )
n n
OUT
e
All Other Pins Grounded
I
ID
1.9 mA
V
F
4F
4.75
ID
e
All Other Pins Grounded
Cir
V
150 mV
IOD
I
3.75
mA
0.0
OD
IL
b
e
0.5V (T/R, OE)
I
I
I
Input LOW Current
1.2
mA
mA
mA
Max
Max
Max
V
V
V
IN
a
e
2.7V (A , B )
I
Output Leakage Current
Output Leakage Current
70
IH
IL
OZH
OUT
OUT
n
n
a
b
e
0.5V (A , B )
I
650
OZL
n
n
3
DC Electrical Characteristics (Continued)
54F/74F
Typ
Symbol
Parameter
Units
V
CC
Conditions
Min
Max
b
b
b
e
e
I
Output Short-Circuit Current
60
150
225
V
V
0V (A )
n
OS
OUT
mA
Max
b
100
0V (B )
n
OUT
e
I
I
I
I
Bus Drainage Test
500
mA
mA
mA
mA
0.0V
Max
Max
Max
V
V
V
V
5.25V(A , B )
n n
ZZ
OUT
e
Power Supply Current
Power Supply Current
Power Supply Current
70
95
85
90
HIGH
LOW
HIGH Z
CCH
CCL
CCZ
O
e
120
110
O
e
O
AC Electrical Characteristics
74F
54F
74F
e a
T
25 C
§
5.0V
A
e
50 pF
e
Co
T
, V
CC
e
Mil
T
, V
A CC
A
e a
Symbol
Parameter
V
ts
CC
e
C
C
L
50
L
e
C
50 pF
L
Min
Typ
Max
Min
Max
in
t
t
Propagation Delay
2.5
2.5
4.2
4.2
6.0
6.0
2.0
2.0
7.5
7.5
2
2.0
7.0
7.0
PLH
s
ns
A
n
to B or B to A
n n n
PHL
t
t
Output Enable Time
Output Disable Time
3.0
3.5
5.3
6.0
7.0
8.0
2.5
3.0
9.0
5
.0
9.
PZH
10.
PZL
t
t
2.0
2.0
5.0
5.0
6.5
6.5
2.
2.0
9.
2.0
2.0
7.5
7.5
PHZ
10.0
PLZ
Ordering Information
The device number is used to form part of a simplified purchasing code packatype and temperature range are
defined as follows:
74F 245
S
C
Temperature Range Family
Variations
e
e
e
74F
54F
Commercial
Military
Military grade device with
environmental and burn-in
processing
Device Type
e
X
Devices shipped in 13 reel
×
Package Code
Temperature Range
e
e
e
e
e
e
e
P
D
F
Plastic DIP
Ceramic DIP
Flatpak
Leadless LCC)
Small C
e
e
a
C
M
Commercial (0 C to 70 C)
§
§
b a
Military ( 55 C to 125 C)
§
§
L
NOTE: NOT REQUIRED
FOR MSA PACKAGE CODE
S
MSA
SJ
Shrine (EIAJ SOP)
SmaEIAJ
4
Physical Dimensions inches (millimeters)
20-Lead Ceramic Leadlep CarriL)
NS Package A
20-Lead Ceramic Dual-In-Line Package (D)
NS Package Number J20A
5
Physical Dimensions inches (millimeters) (Continued)
20-Lead (0.300 Wide) Molded Small Outline PackagEDEC
×
NS Package Number M20B
20-Lead (0.300 Wide) Molded Small Outline Package, EIAJ (SJ)
×
NS Package Number M20D
6
Physical Dimensions inches (millimeters) (Continued)
20-Lead Molded Shrink Small Outline Page, EIAe II (MS
NS Package Number MS0
20-Lead Molded (0.300 Wide) Dual-In-Line Package (P)
×
NS Package Number N20A
7
Physical Dimensions inches (millimeters) (Continued)
20-Lead Ceramic Flatpak (F)
NS Package Number W20A
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