FSTD16450GX 데이터 시트보기 (PDF) - Fairchild Semiconductor
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FSTD16450GX
Fairchild Semiconductor
FSTD16450GX Datasheet PDF : 11 Pages
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Functional Description
The device can also be configured as an 8 and 16-bit device by grounding the unused pins in Configurations 2 and 1
respectively. The 8-bit configuration may also be achieved by tying two of the 4-bit enables from configuration together and
tying the remaining enable pin (OE) HIGH.
Truth Tables (X = VCC or GND)
(see Functional Description)
S2
L
H
Select Pin
Mode
Std. NMOS Switch
Level Shifting Diode Enabled
Configuration 1
OE1
L
H
OE2
X
X
Inputs
S0 = S1 = L
OE3
OE4
OE5
X
X
X
X
X
X
20-Bit Configuration
Inputs/Outputs
1A1-10 = 1B1-10, 2A1-10 = 2B1-10
Z
Configuration 2
OE1
OE2
L
X
L
X
H
X
H
X
S0 = L, S1 = H
Inputs
OE3
OE4
OE5
X
L
X
X
H
X
X
L
X
X
H
X
10-Bit Configuration
Inputs/Outputs
1A1-10 = 1B1-10
1AX = 1BX
1AX = 1BX
Z
Z
2A1-10 = 2B1-10
2AX = 2BX
Z
2AX = 2BX
Z
Configuration 3
Inputs
OE1 OE2 OE3
L
L
L
L
L
L
L
L
H
L
L
H
L
H
L
L
H
L
L
H
H
L
H
H
H
L
L
H
L
L
H
L
H
H
L
H
H
H
L
H
H
L
H
H
H
H
H
H
S0 = H, S1 = L
OE4 OE5
L
X
H
X
L
X
H
X
L
X
H
X
L
X
H
X
L
X
H
X
L
X
H
X
L
X
H
X
L
X
H
X
1A1-5, 1B1-5
1Ax = 1Bx
1Ax = 1Bx
1Ax = 1Bx
1Ax = 1Bx
1Ax = 1Bx
1Ax = 1Bx
1Ax = 1Bx
1Ax = 1Bx
Z
Z
Z
Z
Z
Z
Z
Z
5-Bit Configuration
Inputs/Outputs
1A6-10, 1B6-10
1Ay = 1By
1Ay = 1By
1Ay = 1By
1Ay = 1By
Z
Z
Z
Z
1Ay = 1By
1Ay = 1By
1Ay = 1By
1Ay = 1By
Z
Z
Z
Z
2A1-5, 2B1-5
2Ax = 2Bx
2Ax = 2Bx
Z
Z
2Ax = 2Bx
2Ax = 2Bx
Z
Z
2Ax = 2Bx
2Ax = 2Bx
Z
Z
2Ax = 2Bx
2Ax = 2Bx
Z
Z
2A6-10, 2B6-10
2Ay = 2By
Z
2Ay = 2By
Z
2Ay = 2By
Z
2Ay = 2By
Z
2Ay = 2By
Z
2Ay = 2By
Z
2Ay = 2By
Z
2Ay = 2By
Z
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