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S1X70000 Datasheet, PDF (48/379 Pages) Epson Company – STANDARD CELL / EMBEDDED ARRAY
Chapter 4 Types of Input/Output Buffers and Their Use
4.2.2 Output Buffers
Tables 4-4 and 4-6 list the output buffers (3.3-V buffers: Y type).
Table 4-3 Rated IOH and IOL Values at Each Voltage
Type of Output Current
Type 1
IOH*1/IOL*2
VDD = 1.8 V
VDD = 1.5 V
-1/1
-0.75/0.75
Unit
mA
Type 2
-2/2
-1.5/1.5
mA
Type 3
-4/4
-3/3
mA
Type 4
-6/6
-4.5/4.5
mA
Notes *1: VOH = VDD - 0.4 V
*2: VOL = 0.4 V
Table 4-4 Output Buffers List
Function
Normal output for high speed
IOH/IOL
Type 1
Type 2
Type 3
Type 4
Cell Name*1, *2
MOB#ATY
Normal output for low noise
Type 1
Type 2
Type 3
Type 4
MOB#BTY
3-state output for high speed
Type 1
Type 2
Type 3
Type 4
MTB#ATY
3-state output for low noise
Type 1
Type 2
Type 3
Type 4
MTB#BTY
3-state output for high speed(Bus hold circuit)
Type 1
Type 2
Type 3
Type 4
MTB#AHTY
3-state output for low noise(Bus hold circuit)
Type 1
Type 2
Type 3
Type 4
MTB#BHTY
Notes
*1: The # denotes 1, 2, 3, or 4, with the IOH/IOL values corresponding to Type 1, Type 2, Type 3, and
Type 4, respectively (for details, refer to Table 4-3).
*2: In addition to the configurations shown in Table 4-4, the output buffers may be configured
without test pins.
Customers desiring to use such configurations should direct inquiries to Epson.
40
EPSON
STANDARD CELL S1K70000 SERIES
EMBEDDED ARRAY S1X70000 SERIES