2.3.4.3 1.8V LVCMOS

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Low-voltage CMOS for 1.8V is an extension of the LVCMOS standard (JESD8-5) used for general-purpose 1.8V applications. It uses a 1.8V input buffer and a push-pull output buffer.

Table 2-48. Minimum and Maximum DC Input and Output Levels Applicable to FPGA I/O Banks
1.8V LVCMOS	VIL		VIH		VOL	VOH	IOL	IOH	IOSL	IOSH	IIL	IIH
Drive Strength	Min. V	Max. V	Min. V	Max. V	Max. V	Min. V	mA	mA	Max. mA¹	Max. mA¹	µA²	µA²
2 mA	–0.3	0.35 * VCCxxxxIOBx	0.65 * VCCxxxxIOBx	1.9	0.45	VCCxxxxIOBx – 0.45	2	2	11	9	15	15
4 mA	–0.3	0.35 * VCCxxxxIOBx	0.65 * VCCxxxxIOBx	1.9	0.45	VCCxxxxIOBx – 0.45	4	4	22	17	15	15
6 mA	–0.3	0.35 * VCCxxxxIOBx	0.65 * VCCxxxxIOBx	1.9	0.45	VCCxxxxIOBx – 0.45	6	6	44	35	15	15
8 mA	–0.3	0.35 * VCCxxxxIOBx	0.65 * VCCxxxxIOBx	1.9	0.45	VCCxxxxIOBx – 0.45	8	8	51	45	15	15
12 mA³	–0.3	0.35 * VCCxxxxIOBx	0.65 * VCCxxxxIOBx	1.9	0.45	VCCxxxxIOBx – 0.45	12	12	74	91	15	15
16 mA	–0.3	0.35 * VCCxxxxIOBx	0.65 * VCCxxxxIOBx	1.9	0.45	VCCxxxxIOBx – 0.45	16	16	74	91	15	15

Note:

Currents are measured at high temperature (100 °C junction temperature) and maximum voltage.
Currents are measured at 125 °C junction temperature.
Denotes the software default selection. This note is applicable for the entire row.

Table 2-49. Minimum and Maximum DC Input and Output Levels—Applicable to MSS I/O Banks
1.8VLVCMOS	VIL		VIH		VOL	VOH	IOL	IOH	IOSL	IOSH	IIL	IIH
Drive Strength	Min. V	Max. V	Min. V	Max. V	Max. V	Min. V	mA	mA	Max. mA¹	Max. mA¹	µA²	µA²
4 mA³	–0.3	0.35 * VCCxxxxIOBx	0.65 * VCCxxxxIOBx	3.6	0.45	VCCxxxxIOBx – 0.45	4	4	22	17	15	15

Note:

Currents are measured at high temperature (100 °C junction temperature) and maximum voltage.
Currents are measured at 125 °C junction temperature.
Denotes the software default selection. This note is applicable for the entire row.

Figure 2-18. AC Loading

Table 2-50. AC Waveforms, Measuring Points, and Capacitive Loads
Input Low (V)	Input High (V)	Measuring Point¹ (V)	V_REF (typ.) (V)	C_LOAD (pF)
0	1.8	0.9	—	35

Note:

Measuring point = Vtrip. See Table 2-22 for a complete table of trip points.

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