Original Creation Date: 07/11/96
Last Update Date: 07/30/96
Last Major Revision Date: 07/11/96
MNDM54LS245-X REV 0A0
MILITARY DATA SHEET
OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE
INPUTS/OUTPUTS
General Description
The LS245 octal bus transceiver is designed for asynchronous two-way communication between
data buses. The control function implementation minimizes external timing requirements.
The device allows data transmission from the A bus to the B bus or from the B bus to the A
bus depending upon the logic level at the direction control (DIR) input. The enable input
(G) can be used to disable the device so that the buses are effectively isolated.
NS Part Numbers
DM54LS245E/883
DM54LS245J/883
DM54LS245W/883
Industry Part Number
DM54LS245
Prime Die
L245
Processing
MIL-STD-883, Method 5004
Quality Conformance Inspection
MIL-STD-883, Method 5005
Subgrp Description Temp ( C)
o
1
Static tests at
+25
2
Static tests at
+125
3
Static tests at
-55
4
Dynamic tests at
+25
5
Dynamic tests at
+125
6
Dynamic tests at
-55
7
Functional tests at
+25
8A
Functional tests at
+125
8B
Functional tests at
-55
9
Switching tests at
+25
10
Switching tests at
+125
11
Switching tests at
-55
1
MILITARY DATA SHEET
MNDM54LS245-X REV 0A0
(Absolute Maximum Ratings)
(Note 1)
Storage Temperature
-65 C to +150 C
Ambient Temperature under Bias
-55 C to +125 C
Junction Temperature under Bias
-55 C to +175 C
Vcc Pin Potential to Ground Pin
-0.5V to +7.0V
Input Voltage
-0.5V to +10.0V
DIR OR G
-0.5V to +5.5V
A OR B
Note 1:
Absolute Maximum ratings are those values beyond which the device may be damaged or
have its useful life impaired. Functional operation under these conditions is not
implied.
Recommended Operating Conditions
Free Air Ambient Temperature
-55 C to +125 C
Military
Supply Voltage
+4.5V to +5.5V
Military
3
MNDM54LS245-X REV 0A0
MILITARY DATA SHEET
Electrical Characteristics
DC PARAMETERS
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC:
VCC 4.5V to 5.5V, Temp range: -55C to 125C
SYMBOL
PARAMETER
CONDITIONS
NOTES
PIN-
NAME
MIN
MAX
UNIT
SUB-
GROUPS
IIH
Input High
Current
VCC=5.5V, VM=2.7V, VINH=4.5V,
VINL=0.0V
1, 3 INPUTS
20
uA
1, 2,
3
IBVI1
Input High
Current
VCC=5.5V, VM=5.5V, VINH=4.5V,
VINL=0.0V
1, 3 A OR B
INPUTS
100
uA
1, 2,
3
IBVI2
Input High
Current
VCC=5.5V, VM=10.0V, VINH=4.5V,
VINL=0.0V
1, 3 DIR/EX
INPUTS
100
uA
1, 2,
3
IIL
Input LOW Current
VCC=5.5V, VM=0.4V, VINH=4.5V,
VINL=0.0V
1, 3 INPUTS
-0.5
-200
uA
1, 2,
3
VOL
Output LOW
Voltage
VCC=4.5V, VIL=0.7V, VIH=2.2V,
IOL=12mA, VINH=4.5V, VINL=0.0V
1, 3 OUTPUTS
0.4
V
1, 2,
3
VOH1
Output HIGH
Voltage
VCC=4.5V, VIL=0.7V, VIH=2.2V,
IOH=-3mA, VINH=4.5V, VINL=0.0V
1, 3 OUTPUTS 2.4
V
1, 2,
3
VOH2
Output HIGH
Voltage
VCC=4.5V, VIL=0.7V, VIH=2.2V,
IOH=-12mA, VINH=4.5V, VINL=0.0V
1, 3 OUTPUTS 2.0
V
1, 2,
3
IOS
Output Short
Circuit Current
VCC=5.5V, VINL=0.0V, VINH=4.5V,
VOUT=0.0V
1, 3 OUTPUTS -50
-225
mA
1, 2,
3
VIC
Input Clamp Diode
Voltage
VCC=4.5V, IM=-18mA, VINH=4.5V,
VINL=0.0V
1, 3 INPUTS
-1.5
V
1, 2,
3
ICCH
Supply Current
VCC=5.5V, VINH=4.5V, VINL=0.0V
1, 3 VCC
70
mA
1, 2,
3
ICCL
Supply Current
VCC=5.5V, VINL=0.0V, VINH=4.5V
1, 3 VCC
90
mA
1, 2,
3
ICCZ
Supply Current
VCC=5.5V, VINL=0.0V, VINH=4.5V
1, 3 VCC
95
mA
1, 2,
3
IOZH
Tristate Output
Leakage Current
VCC=5.5V, VM=2.7V, VIH=2.2V, VIL=0.7V,
VINH=4.5V, VINL=0.0V
1, 3 OUTPUTS
20
uA
1, 2,
3
IOZL
Tristate Output
Leakage Current
VCC=5.5V, VM=0.4V, VIH=2.2V, VIL=0.7V,
VINL=0.0V, VINH=4.5V
1, 3 OUTPUTS
-200
uA
1, 2,
3
VT+/VT-
Hysteresis
VCC=4.5V, VINH=4.5V, VINL=0.0V
1, 3 INPUTS
100
mV
1, 2,
3
4
MNDM54LS245-X REV 0A0
MILITARY DATA SHEET
Electrical Characteristics
AC PARAMETERS
(The following conditions apply to all the following parameters, unless otherwise specified.)
AC:
CL=50pf, RL=110 OHMS, R=2.4K OHMS, TR=15ns, TF=6ns
SYMBOL
PARAMETER
CONDITIONS
NOTES
PIN-
NAME
MIN
MAX
UNIT
SUB-
GROUPS
tpLH
Propagation Delay
VCC=5.0V
2, 4 An/Bn
or
Bn/An
2.0
18.0
ns
9
5
An/Bn
or
Bn/An
2.0
26.0
ns
10, 11
tpHL
Propagation Delay
VCC=5.0V
2, 4 An/Bn
or
Bn/An
2.0
18.0
ns
9
5
An/Bn
or
Bn/An
2.0
26.0
ns
10, 11
tpZH
Output Enable
Time
VCC=5.0V
2, 4 OUTPUT
ENABLE
2.0
34.0
ns
9
5
OUTPUT
ENABLE
2.0
58.0
ns
10, 11
tpZL
Output Enable
Time
VCC=5.0V
2, 4 OUTPUT
ENABLE
2.0
28.0
ns
9
5
OUTPUT
ENABLE
2.0
39.0
ns
10, 11
tpHZ
Output Disable
Time
VCC=5.0V
2, 4 OUTPUT
DISABLE
2.0
35.0
ns
9
5
OUTPUT
DISABLE
2.0
49.0
ns
10, 11
tpLZ
Output Disable
Time
VCC=5.0V
2, 4 OUTPUT
DISABLE
2.0
26.0
ns
9
5
OUTPUT
DISABLE
2.0
44.0
ns
10, 11
AC PARAMETERS - ALTERNATE ZL/ZH LOAD
(The following conditions apply to all the following parameters, unless otherwise specified.)
AC:
CL=50pf, RL=667 OHMS, R=5.0K OHMS, TR=15ns, TF=6ns
tpZL
Output Enable
Time
VCC=5.0V
5
OUTPUT
ENABLE
30.0
ns
9
tpZH
Output Enable
Time
VCC=5.0V
5
OUTPUT
ENABLE
30.0
ns
9
5
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