S1K50000 Epson Electronics America, Inc., S1K50000 Datasheet - Page 51
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S1K50000
Manufacturer Part Number
S1K50000
Description
Design Guide S1k50000 Series
Manufacturer
Epson Electronics America, Inc.
Datasheet
1.S1K50000.pdf
(131 pages)
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Chapter 3: Types of Input/Output Buffers and Usage Precautions
46
*1: The indicated resistance values apply to cases where V
Schmitt
LVTTL
LVTTL
Input
Level
Fail-Safe input: XIDC
2) Tri-state type
5-V input
As with tri-state output buffers, this type of cell cannot have its output pulled high to 5
V through the addition of a pull-up resistor external to the standard cell.
Fail-Safe output: XTBF1
Drain
Type
Safe
Safe
Fail-
Fail-
Function
Test
N/A
N/A
Figure 3-4 Typical Configuration of a Fail-Safe Cell
Table 3-4-4 Fail-Safe Cell Bidirectional Buffers
V
Function
DD
Output
Latch
N/A
N/A
= 3.3 V
Internal: 3.3 V
SPEED
SPEED
Normal
Normal
I/O cell area
Speed
HIGH-
HIGH-
Vss
EPSON
-12 / 12
-12 / 12
Current
(mA)
Output
-2 / 2
-6 / 6
-2 / 2
-6 / 6
-2 / 2
-6 / 6
-2 / 2
-6 / 6
DD
*1
Fail-Safe bidirectional: XBB1
= 3.3 V.
N-channel open-drain output: XOD1T
Resistor
Without
BB1C
BB2C
BG1C
BG2C
BG3A
BB3A
BB1
BB2
BG1
BG2
a
BG1CD1
BG2CD1
BG3AD1
BB1CD1
BB2CD1
BB3AD1
BG1D1
BG2D1
BB1D1
BB2D1
50 k
Pull-down
5 V
STANDARD CELL S1K50000 SERIES
3.3-V output
3.3-V output
5-V output
5-V input
BG1CD2
BG2CD2
BG3AD2
BB1CD2
BB2CD2
BB3AD2
100 k
BG1D2
BG2D2
BB1D2
BB2D2
*1
BB1CP1
BB2CP1
BG3AP1
BB3AP1
BB1P1
BB2P1
50 k
—
—
—
—
Pull-up
DESIGN GUIDE
(V
DD
BG3AP2
BB1CP2
BB2CP2
BB3AP2
100 k
BB1P2
BB2P2
*1
= 3.3 V)
—
—
—
—
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