DS8838 Datasheet, PDF (3/5 Pages) National Semiconductor (TI) – Quad Unified Bus Transceiver

Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Molded DIP Package: 1362 mW
SO Package: 1002 mW
Operating Conditions
Supply Voltage
Input and Output Voltage
Storage Temperature Range
Lead Temperature, (Soldering, 4 sec.)
7V
5.5V
−65˚C to +150˚C
260˚C
Maximum Power Dissipation (Note 1) at 25˚C
Operating Temperature Range
Supply Voltage (V_CC)
0˚C to +70˚C
4.75V ≤ V_CC ≤ 5.25V
Note 1: Derate cavity package 9.6 mW/˚C above 25˚C; derate molded DIP
package 10.9 mW/˚C above 25˚C; derate SO package 8.01 mW/˚C above
25˚C.
Cavity Package: 1433 mW
Electrical Characteristics
The following apply for V_MIN ≤ V_CC ≤ V_MAX, T_MIN ≤ T_A ≤ T_MAX, unless otherwise specified (Notes 3, 4)
Symbol
Parameter
Conditions
Min Typ Max Units
DRIVER AND DISABLE INPUTS
V_IH
Logical “1” Input Voltage
V_IL
Logical “0” Input Voltage
I_I
Logical “1” Input Current
I_IH
Logical “1” Input Current
I_IL
Logical “0” Input Current
V_CL
Input Diode Clamp Voltage
DRIVER OUTPUT/RECEIVER INPUT
2.0
V
0.8
V
V_IN = 5.5V
V_IN = 2.4V
V_IN = 0.4V
I_DIS = −12 mA, I_IN = −12 mA, I_BUS = −12 mA,
T_A = 25˚C
1
mA
40
µA
−1.6 mA
−1 −1.5
V
V_OLB
I_IHB
I_ILB
V_IH
Low Level Bus Voltage
Maximum Bus Current
Maximum Bus Current
High Level Receiver Threshold
V_DIS = 0.8V, V_IN = 2V, I_BUS = 50 mA
V_IN = 0.8V, V_BUS = 4V, V_CC = V_MAX
V_IN = 0.8V, V_BUS = 4V, V_CC = 0V
V_IND = 0.8V, I_OL = 16 mA, V_CC =
Max
0.4 0.7
V
20
100
µA
2
100
µA
1.80 2.25 2.50
V
V_IL
Low Level Receiver Threshold
RECEIVER OUTPUT
V_IND = 0.8V, V_OH = −400 µA, V_CC = Min
1.05 1.30 1.55
V
V_OH
Logical “1” Output Voltage
V_OL
Logical “0” Output Voltage
I_OS
Output Short Circuit Current
I_CC
Supply Current
t_pd
Propagation Delays (Note 9)
Disable to Bus “1”
V_IN = 0.8V, V_BUS = 0.5V, I_OH = −400 µA
V_IN = 0.8V, V_BUS = 4V, I_OL = 16 mA
V_DIS = 0.8V, V_IN = 0.8V, V_BUS = 0.5V,
V_OS = 0V, V_CC = V_MAX, (Note 5)
V_DIS = 0V, V_IN = 2V, (Per Package)
(Note 6)
2.4
V
0.25 0.4
V
−18
−55 mA
50
70
mA
19
30
ns
Disable to Bus “0”
(Note 6)
15
23
ns
Driver Input to Bus “1”
(Note 6)
17
25
ns
Driver Input to Bus “0”
(Note 6)
9
15
ns
Bus to Logical “1” Receiver
Output
(Note 7)
20
30
ns
Bus to Logical “0” Receiver
Output
(Note 8)
18
30
ns
Note 2: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. Except for “Operating Temperature Range” they
are not meant to imply that the devices should be operated at these limits. The table of “Electrical Characteristics” provides conditions for actual device operation.
Note 3: Unless otherwise specified min/max limits apply across the −55˚C to +125˚C temperature range for the DS7838 and across the 0˚C to +70˚C range for the
DS8838. All typical values are for T_A = 25˚C and V_CC = 5V.
Note 4: All currents into device pins shown as positive, out of device pins as negative, all voltages referenced to ground unless otherwise noted. All values shown
as max or min on absolute value basis.
Note 5: Only one output at a time should be shorted.
Note 6: 91Ω from bus pin to V_CC and 200Ω from bus pin to ground, C_LOAD = 15 pF total. Measured from V_IN = 1.5V to V_BUS = 1.5V, V_IN = 0V to 3.0V pulse.
Note 7: Fan-out of 10 load, C_LOAD = 15 pF total. Measured from V_IN = 1.3V to V_OUT = 1.5V, V_IN = 0V to 3.0V pulse.
Note 8: Fan-out of 10 load, C_LOAD = 15 pF total. Measured from V_IN = 2.3V to V_OUT = 1.5V, V_IN = 0V to 3.0V pulse.
Note 9: These apply for V_CC = 5V, T_A = 25˚C unless otherwise speicified.
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