DS8922_15 Datasheet, PDF (4/20 Pages) Texas Instruments – TRI-STATE RS-422 Dual Differential Line Driver and Receiver Pairs

DS8922, DS8922A, DS8923A
SNLS373B – JUNE 1998 – REVISED APRIL 2013
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DS8922/22A and DS8923A Electrical Characteristics^(1)(2)(3)
Symbol
Conditions
Min
Typ
Max
Units
RECEIVER
V_TH
V_HYST
R_IN
I_IN
V_OH
V_OL
I_SC
DRIVER
−7V ≤ V_CM ≤ +7V
−7V ≤ V_CM ≤ +7V
V _IN = −7V, +7V (Other Input = GND)
V_IN = 10V
V_IN = −10V
V _CC = MIN, I_OH = − 400 μA
V _CC = MAX, I_OL = 8 mA
V _CC = MAX, V_OUT = 0V
−200
±35
+200
mV
15
70
mV
4.0
6.0
kΩ
3.25
mA
−3.25
mA
2.5
V
0.5
V
−15
−100
mA
V_OH
V_OL
I_OFF
|VT|–| VT |
V _CC = MIN, I_OH = −20 mA
V _CC = MIN, I_OL = +20 mA
V _CC = 0V, V_OUT = 5.5V
2.5
V
0.5
V
100
μA
0.4
V
VT
2.0
V
|V_OS– V_OS |
I_SC
V _CC = MAX, V_OUT = 0V
DRIVER and RECEIVER
0.4
V
−30
−150
mA
I_OZ
TRI-STATE
Leakage
V_CC = MAX
V_OUT = 2.5V
V_OUT = 0.4V
50
μA
−50
μA
I_CC
V_CC = MAX
ACTIVE
TRI-STATE
76
mA
78
mA
DRIVER and ENABLE INPUTS
V_IH
V_IL
I_IL
V _CC = MAX, V_IN = 0.4V
I_IH
V _CC = MAX, V_IN = 2.7V
I_I
V _CC = MAX, V_IN = 7.0V
V_CL
V _CC = MIN, I_IN = −18 mA
2.0
V
0.8
V
−40
−200
μA
20
μA
100
μA
−1.5
V
(1) All currents into device pins are shown as positive values; all currents out of the device are shown as negative; all voltages are
referenced to ground unless otherwise specified. All values shown as max or min are classified on absolute value basis.
(2) All typical values are V_CC = 5V, T_A = 25°C.
(3) Only one output at a time should be shorted.
Receiver Switching Characteristics (Figure 1) (Figure 2) (Figure 2)
Parameter
Conditions
Min
Typ
8922
T_pLH
T_pHL
|T_pLH–T _pHL|
Skew (Channel to Channel)
CL = 30 pF
CL = 30 pF
CL = 30 pF
CL = 30 pF
12
22.5
12
22.5
0.5
5
0.5
3.0
T_pLZ
T_pHZ
T_pZL
T_pZH
CL = 15 pF S2 Open
15
CL = 15 pF S1 Open
15
CL = 30 pF S2 Open
20
CL = 30 pF S1 Open
20
Max
8922A/23A
20
20
3.5
2.0
Units
ns
ns
ns
ns
ns
ns
ns
ns
4
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