Stratix® V Device Handbook: Volume 1: Device Interfaces and Integration

ID 683665
Date 10/18/2023
Public
Document Table of Contents

5.8. I/O Termination Schemes for Stratix® V Devices

Table 48.  Termination Schemes for Different I/O Standards
I/O Standard External Termination Scheme
3.3-V LVTTL/3.3-V LVCMOS No external termination required
2.5-V LVCMOS
1.8-V LVCMOS
1.5-V LVCMOS
1.2-V LVCMOS
SSTL-2 Class I Single-Ended SSTL I/O Standard Termination
SSTL-2 Class II
SSTL-18 Class I
SSTL-18 Class II
SSTL-15 Class I
SSTL-15 Class II
1.8-V HSTL Class I Single-Ended HSTL I/O Standard Termination
1.8-V HSTL Class II
1.5-V HSTL Class I
1.5-V HSTL Class II
1.2-V HSTL Class I
1.2-V HSTL Class II
Differential SSTL-2 Class I Differential SSTL I/O Standard Termination
Differential SSTL-2 Class II
Differential SSTL-18 Class I
Differential SSTL-18 Class II
Differential SSTL-15 Class I
Differential SSTL-15 Class II
Differential 1.8-V HSTL Class I Differential HSTL I/O Standard Termination
Differential 1.8-V HSTL Class II
Differential 1.5-V HSTL Class I
Differential 1.5-V HSTL Class II
Differential 1.2-V HSTL Class I
Differential 1.2-V HSTL Class II
LVDS LVDS I/O Standard Termination
RSDS RSDS/mini-LVDS I/O Standard Termination
Mini-LVDS
LVPECL Differential LVPECL I/O Standard Termination
SSTL-15 11 No external termination required
SSTL-13511
SSTL-12511
SSTL-12
HSUL-12
Differential SSTL-1511
Differential SSTL-13511
Differential SSTL-12511
Differential SSTL-12
Differential HSUL-12
11 Intel recommends that you use OCT with these I/O standards to save board space and cost. OCT reduces the number of external termination resistors used.