
Chapter 1: DC and Switching Characteristics for Stratix IV Devices
1–55
Switching Characteristics
March 2014
Altera Corporation
Stratix IV Device Handbook
Volume 4: Device Datasheet and Addendum
Transmitter
True Differential I/O
Standards - fHSDR
(data rate)
SERDES factor J = 3 to 10
—
1600
—1250
—
1250
Mbps
SERDES factor J = 2,
Uses DDR Registers
—
—
—
Mbps
SERDES factor J = 1,
Uses an SDR Register
—
—
—
Mbps
Emulated
Differential I/O
Standards with
Three External
Output Resistor
Networks - fHSDR
SERDES factor J = 4 to 10
—
1250
—1152
—
800
Mbps
Emulated
Differential I/O
Standards with One
External Output
Resistor - fHSDR
(data rate)
—311
—
200
—
200
Mbps
tx Jitter - True
Differential I/O
Standards
Total Jitter for Data Rate,
600 Mbps to 1.6 Gbps
—
160
—
160
—
160
ps
Total Jitter for Data Rate,
< 600 Mbps
—
0.1
—
0.1
—
0.1
UI
tx Jitter - Emulated
Differential I/O
Standards with
Three External
Output Resistor
Network
Total Jitter for Data Rate,
600 Mbps to 1.25 Gbps
—
300
—
300
—
325
ps
Total Jitter for Data Rate
< 600 Mbps
——
0.2
——
0.2
——
0.25
UI
tx Jitter - Emulated
Differential I/O
Standards with One
External Output
Resistor Network
—
0.125
—
0.15
—
0.15
UI
tDUTY
Tx output clock duty cycle for
both True and Emulated
Differential I/O Standards
45
50
55
45
50
55
45
50
55
%
tRISE & tFALL
True Differential I/O Standards
—
160
—
200
—
200
ps
Emulated Differential I/O
Standards with Three External
Output Resistor Networks
—
250
—
250
—
300
ps
Emulated Differential I/O
Standards with One External
Output Resistor
—
460
—
500
—
500
ps
Table 1–42. High-Speed I/O Specifications (1), (2) (Part 2 of 3)
Symbol
Conditions
–2/–2× Speed Grade
–3 Speed Grade
–4 Speed Grade
Unit
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max