SCLS450 Data sheet

SCLS450H December 1999 – January 2025 SN74LV221A

PRODUCTION DATA

4.3 Recommended Operating Conditions

over operating free-air temperature (unless otherwise noted)⁽¹⁾

			SN74LV221A		UNIT
			MIN	MAX	UNIT
V_CC	Supply voltage		2	5.5	V
V_IH	High-level input voltage	V_CC = 2 V	1.5		V
		V_CC = 2.3 V to 2.7 V	V_CC × 0.7
		V_CC = 3 V to 3.6 V	V_CC × 0.7
		V_CC = 4.5 V to 5.5 V	V_CC × 0.7
V_IL	Low-level input voltage	V_CC = 2 V		0.5	V
		V_CC = 2.3 V to 2.7 V		V_CC × 0.3
		V_CC = 3 V to 3.6 V		V_CC × 0.3
		V_CC = 4.5 V to 5.5 V		V_CC × 0.3
V_I	Input voltage		0	5.5	V
V_O	Output voltage		0	V_CC	V
I_OH	High-level output current	V_CC = 2 V		−50	µA
		V_CC = 2.3 V to 2.7 V		−2	mA
		V_CC = 3 V to 3.6 V		−6
		V_CC = 4.5 V to 5.5 V		−12
I_OL	Low-level output current	V_CC = 2 V		50	µA
		V_CC = 2.3 V to 2.7 V		2	mA
		V_CC = 3 V to 3.6 V		6
		V_CC = 4.5 V to 5.5 V		12
R_ext	External timing resistance	V_CC = 2 V	5k		Ω
R_ext	External timing resistance	V_CC ≥ 3 V	1k		Ω
C_ext	External timing capacitance		No restriction		pF
∆t/∆V_CC	Power-up ramp rate		1		ms/V
T_A	Operating free-air temperature		−40	85	°C

(1) All unused inputs of the device must be held at V_CC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.