MC74F3893AFN 查看數據表（PDF） - Motorola => Freescale
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MC74F3893AFN Datasheet PDF : 5 Pages
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MC74F3893A
2
D0
LOGIC DIAGRAM
R0 3
4
D1
5
R1
D2 7
8
R2
9
D3
10
R3
11
DE
VCC = PIN 1: LOGIC GND = PIN 6
BUS GND = PIN 13,16, 19: BG GND = PIN 20
18 I/O0
17
I/O1
12
RE
15
I/O2
14 I/O3
FUNCTION TABLE
Inputs
DE
RE
Dn
H
L
L
H
L
H
H
H
L
L
H
H
L
L
X
L
L
X
H = HIGH voltage level:
L = LOW voltage level:
X = Don’t care:
Z = HIGH impedance “Off” state.
Input/Output
I/On
H
L
Dn
H
H
L
Outputs
Rn
L
H
Operating Mode
Transmit to Bus
Z
Receiver 3-State,
Z
Transmit to Bus
L
Receive, I/On = Inputs
H
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
VIH
VIL
IIK
VTH
IOH
IOL
TA
Parameter
Supply Voltage
High-Level Input Voltage
Low-Level Input Voltage
Input Clamp Current
Bus Input Threshold
Output Current High
Output Current Low
Operating Ambient Temperature Range
Dn, DE, RE
I/On Only
Rn Only
Min
4.5
2.0
—
—
1.475
—
—
0
Limits
Typ
5.0
—
—
—
1.550
—
—
—
FAST AND LS TTL DATA
4-274
Max
Unit
5.5
V
—
V
0.8
V
–18
mA
1.625
V
–3.0
mA
100
mA
70
°C
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