DS8935 Datasheet, PDF (4/12 Pages) National Semiconductor (TI) – LocalTalk™ Dual Driver/Triple Receiver

Switching Characteristics (Notes 4, 5) (Continued)
Over Supply Voltage and Operating Temperature Ranges, unless otherwise specified
Symbol
Parameter
Conditions
Min Typ Max Units
RECEIVER CHARACTERISTICS
t_HZ
Disable Time High to Z
t_LZ
Disable Time Low to Z
t_ZH
Enable Time Z to High
t_ZL
Enable Time Z to Low
C_L = 15 pF
(Figures 9, 11)
20
75
ns
20
75
ns
20
75
ns
20
75
ns
Note 1: Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices
should be operated at these limits. The table of Electrical Characteristics specifies conditions of device operation.
Note 2: Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground except V_OD, V_OD1,
V_OD2, and V_SS.
Note 3: All typicals are given for: V_CC = +5.0V, V_EE = −5.0V, T_A = +25˚C unless otherwise specified.
Truth Tables
Driver (D1)
Inputs
D_EN1
H
D_IN1
X
L
L
L
H
Outputs
D_OUT1+
Z
D_OUT1−
Z
L
H
H
L
Receiver (1)
RE
RE
0
1
Any Other
Combination
Input
R_IN1−
X
≤−200 mV
≥+200 mV
Open^†
Output
R_OUT1
Z
H
L
H
Driver (D2)
Input
D_IN2
L
H
Output
D_OUT2−
H
L
Receiver (2)
RE
RE
0
1
Any Other
Combination
Inputs
R_IN2+– R_IN2−
X
≤−200 mV
≥+200 mV
Open^†
Output
R_OUT2
Z
L
H
H
Receiver (3)
RE
RE
Input
0
1
Any Other
Combination
R_IN3+
X
≤−200 mV
≥+200 mV
Open^†
H = Logic High Level (Steady State)
L = Logic Low Level (Steady State)
X = Irrelevant (Any Input)
Z = Off State (TRI-STATE, High Impedance)
†_{OPEN = Non-Terminated}
Output
R_OUT3
Z
L
H
H
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