DLPS249 Data sheet | TI.com

DLPS249 December 2024 DLP991U

PRODUCTION DATA

5.8 Timing Requirements

Over operating free-air temperature range and supply voltages (unless otherwise noted)

SYMBOL	PARAMETER	TEST CONDITIONS	MIN	TYP	MAX	UNIT
LVCMOS
t_r	Rise time ⁽¹⁾	20% to 80% reference points			25	ns
t_f	Fall time ⁽¹⁾	80% to 20% reference points			25	ns
Low Speed Interface (LSIF)
t_r	Rise time ⁽²⁾	20% to 80% reference points			450	ps
t_f	Fall time ⁽²⁾	80% to 20% reference points			450	ps
t_su	Setup time⁽³⁾	LS_WDATA valid before rising edge of LS_CLK (differential)	1.5			ns
t_h	Hold time ⁽³⁾	LS_WDATA valid after rising edge of LS_CLK (differential)	1.5			ns
High Speed Serial Interface (HSSI)
t_r	Rise time ⁽⁴⁾	from -A1 to A1 minimum eye height specification	50		100	ps
t_f	Fall time ⁽⁴⁾	from A1 to -A1 minimum eye height specification	50		100	ps

(1) See Figure 5-9 for rise time and fall time for LVCMOS.

(2) See Figure 5-5 for rise time and fall time for LSIF.

(3) See Figure 5-4 for setup and hold time for LSIF.

(4) See Figure 5-10 for rise time and fall time for HSSI.

DLP991U

Equation 1. DLP991U

DLP991U

Equation 2. DLP991U

DLP991U

Figure 5-3 LSIF Waveform Requirements

DLP991U LSIF Timing Requirements

Figure 5-4 LSIF Timing Requirements

DLP991U LSIF Rise, Fall Time Slew

Figure 5-5 LSIF Rise, Fall Time Slew

DLP991U LSIF Voltage Requirements

Figure 5-6 LSIF Voltage Requirements

DLP991U LSIF Equivalent Input

Figure 5-7 LSIF Equivalent Input

DLP991U LVCMOS Input Hysteresis

Figure 5-8 LVCMOS Input Hysteresis

DLP991U LVCMOS Rise, Fall Time Slew Rate

Figure 5-9 LVCMOS Rise, Fall Time Slew Rate

DLP991U HSSI Waveform Requirements

Equation 3. DLP991U

DLP991U

Equation 4. DLP991U

DLP991U

Figure 5-10 HSSI Waveform Requirements

DLP991U HSSI Eye Characteristics

Figure 5-11 HSSI Eye Characteristics

DLP991U HSSI CLK Characteristics

Figure 5-12 HSSI CLK Characteristics