Datasheet
SN75471 THRU SN75473
DUAL PERIPHERAL DRIVERS
SLRS024 – DECEMBER 1976 – REVISED MAY 1990
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbol
†
≥1
5
3
2B
2A
1B
1A
2Y
1Y
7
6
2
1
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
logic diagram (positive logic)
2B
2A
1B
1A
4
5
3
GND
2Y
1Y
7
6
2
1
FUNCTION TABLE
(each driver)
A
B
Y
L L L (on state)
L H H (off state)
H L H (off state)
H H H (off state)
positive logic:
Y = A + B or A
B
electrical characteristics over recommended operating free-air temperature range
PARAMETER
TEST CONDITIONS
SN75473
UNIT
PARAMETER
TEST
CONDITIONS
MIN
TYP
‡
MAX
UNIT
V
IK
Input clamp voltage V
CC
= 4.75 V, I
I
= –12 mA –1.2 –1.5 V
I
OH
High-level output current V
CC
= 4.75 V, V
IH
= 2 V, V
OH
= 70 V 100 µA
V
OL
Low level out
p
ut voltage
V
CC
= 4.75 V, V
IL
= 0.8 V, I
OL
= 100 mA 0.25 0.4
V
V
OL
Lo
w-
le
v
el
o
u
tp
u
t
v
oltage
V
CC
= 4.75 V, V
IL
= 0.8 V, I
OL
= 300 mA 0.5 0.7
V
I
I
Input current at maximum input voltage V
CC
= 5.25 V, V
I
= 5.5 V 1 mA
I
IH
High-level input current V
CC
= 5.25 V, V
I
= 2.4 V 40 µA
I
IL
Low-level input current V
CC
= 5.25 V, V
I
= 0.4 V –1 –1.6 mA
I
CCH
Supply current, outputs high V
CC
= 5.25 V, V
I
= 5 V 8 11 mA
I
CCL
Supply current, outputs low V
CC
= 5.25 V, V
I
= 0 58 76 mA
‡
All typical values are at V
CC
= 5 V, T
A
= 25°C.
switching characteristics, V
CC
= 5 V, T
A
= 25°C
PARAMETER
TEST CONDITIONS
SN75473
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNIT
t
PLH
Propagation delay time, low-to-high-level output 30 55
t
PHL
Propagation delay time, high-to-low-level output
I
O
≈ 200 mA, C
L
= 15 pF,
25 40
ns
t
TLH
Transition time, low-to-high-level output
O
,
R
L
= 50 Ω,
L
,
See Figure 1
8 25
ns
t
THL
Transition time, high-to-low-level output 10 25
V
OH
High level out
p
ut voltage after switching
V
S
= 55 V, I
O
≈ 300 mA,
V
S
18
mV
V
OH
High
-
le
v
el
o
u
tp
u
t
v
oltage
after
s
w
itching
S
See Figure 2
O
V
S
–
18
mV
schematic (each driver)
Resistor values shown are nominal.
V
CC
A
GND
Y
500 Ω
1 kΩ
B
4 kΩ 1.6 kΩ 130 Ω
4 kΩ