SN55451B, SN55452B, SN55453B, SN55454B
SN75451B, SN75452B, SN75453B, SN75454B
DUAL PERIPHERAL DRIVERS
SLRS021B – DECEMBER 1976 – REVISED SEPTEMBER 1999
†
logic diagram (positive logic)
logic symbol
3
5
1
1A
1Y
2Y
1
≥1
1A
1B
2A
2B
3
5
2
2
6
7
1Y
2Y
1B
6
2A
7
2B
4
GND
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC publication 617-12.
schematic (each driver)
Pin numbers shown are for the D, JG, and P packages.
V
CC
2 kΩ
2 kΩ
FUNCTION TABLE
(each driver)
1.6
kΩ
4 kΩ
4
kΩ
130 Ω
A
L
B
L
Y
H (off state)
L (on state)
L (on state)
L (on state)
Y
A
B
L
H
L
H
H
H
1 kΩ
1 kΩ
500 Ω
positive logic:
Y = A+B or AB
GND
Resistor values shown are nominal.
electrical characteristics over recommended operating free-air temperature range
SN55454B
SN75454B
‡
PARAMETER
Input clamp voltage
UNIT
TEST CONDITIONS
§
§
MIN TYP
MAX
MIN TYP
MAX
V
V
V
V
= MIN,
= MIN,
I = –12 mA
–1.2
0.25
–1.5
–1.2
0.25
–1.5
V
IK
CC
I
V
V
V
= MIN,
= MIN,
= 0.8 V,
CC
IH
IH
IL
0.5
0.8
0.4
0.7
I
= 100 mA
OL
Low-level output voltage
V
OL
V
I
= MIN,
CC
= 300 mA
0.5
0.5
OL
V
V
= MIN,
= 30 V
CC
OH
I
High-level output current
300
100
µA
OH
I
I
I
I
I
Input current at maximum input voltage
High-level input current
V
CC
V
CC
V
CC
V
CC
V
CC
= MAX,
= MAX,
= MAX,
= MAX,
= MAX,
V = 5.5 V
1
40
1
40
mA
µA
I
I
V = 2.4 V
I
IH
Low-level input current
V = 0.4 V
I
–1
13
61
–1.6
17
–1
13
61
–1.6
17
mA
mA
mA
IL
Supply current, outputs high
Supply current, outputs low
V = 0
I
CCH
CCL
V = 5 V
I
79
79
‡
§
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
All typical values are at V
= 5 V, T = 25°C.
A
CC
switching characteristics, V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
MIN
TYP
27
24
5
MAX
35
35
8
UNIT
t
t
t
t
Propagation delay time, low-to-high-level output
Propagation delay time, high-to-low-level output
Transition time, low-to-high-level output
PLH
PHL
TLH
THL
I
R
≈ 200 mA,
= 50 Ω,
C = 15 pF,
L
See Figure 1
O
L
ns
Transition time, high-to-low-level output
7
12
SN55454B
SN75454B
V –6.5
S
V
= 20 V,
I
O
≈ 300 mA,
S
V
OH
High-level output voltage after switching
mV
See Figure 2
V
S
–6.5
6
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