SN74AVC2T244 2-Bit Unidirectional Voltage-level Translator
- SCES767C September 2011 – March 2021 SN74AVC2T244
  
  PRODUCTION DATA

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DATA SHEET

SN74AVC2T244 2-Bit Unidirectional Voltage-level Translator

1 Features

Wide Operating V_CC Range of 0.9 V to 3.6 V
Low Static-Power Consumption, 6-µA Max I_CC
Output Enable Feature Allows User to Disable Outputs to Reduce Power Consumption
±24-mA Output Drive at 3.0 V
I_off Supports Partial Power-Down-Mode Operation
Input Hysteresis Allows Slow Input Transition and Better Switching Noise Immunity at Input
Maximum Data Rates
- 380 Mbps (1.8-V to 3.3-V Translation)
- 200 Mbps (<1.8-V to 3.3-V Translation)
- 200 Mbps (Translate to 2.5 V or 1.8 V)
- 150 Mbps (Translate to 1.5 V)
- 100 Mbps (Translate to 1.2 V)
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
ESD Protection Exceeds JESD 22
- 5000-V Human-Body Model (A114-A)

2 Applications

Handset, Smartphone, Tablet, Server

3 Description

This 2-bit unidirectional translator uses two separate configurable power-supply rails. The A port is designed to track V_CCA. V_CCA accepts any supply voltage from 0.9 V to 3.6 V. The B port is designed to track V_CCB. V_CCB accepts any supply voltage from 0.9 V to 3.6 V. This allows for low-voltage translation between 0.9-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V and 3.6-V voltage nodes. For the SN74AVC2T244, when the output-enable ( OE) input is high, all outputs are placed in the high-impedance state. The SN74AVC2T244 is designed so that the OE input circuit is referenced to V_CCA. This device is fully specified for partial-power-down applications using Ioff. The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

DQE and DQM Packages8 Pin X2SON(Top View)

4 Revision History

Changes from Revision B (September 2011) to Revision C (March 2021)

Updated the numbering format for tables, figures, and cross-references throughout the documentGo
Updated the title of the data sheetGo
Deleted Ordering Information table, see POA at the end of the datasheet. Go

5 Pin Configuration and Functions

Figure 5-1 DQE and DQM Packages8 Pin X2SON(Top View)

Table 5-1 Pin Functions

PIN	FUNCTION
VCCA	Input Port DC Power Supply
VCCB	Output Port DC Power Supply
GND	Ground
An	Input Port
Bn	Output Port
OE	Output Enable

6 Specifications

6.1 Absolute Maximum Ratings

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

				MIN	MAX	UNIT
Voltage	DC Supply voltage, V_CCA V_CCB			–0.5	4.6	V
	DC Input voltage, V_I		A_n	–0.5	4.6	V
	Control Input, V_C		OE	–0.5	4.6	V
	DC Output voltage, V_O, V_CCA = V_CCB = 0	(Power Down)	B_n	–0.5	4.6	V
		(Active Mode)	B_n	–0.5	4.6
		3-State Mode	B_n	–0.5	4.6
	DC Input Diode current, I_IK	V_I < GND			–20	mA
	DC Output Diode current, I_OK	V_O < GND			–50	mA
	DC Output Source/Sink current, I_O				±50	mA
	DC Supply current per supply pin, I_CCA, I_CCB				±100	mA
I_GND	DC Ground current per ground pin				±100	mA
T_stg	Storage temperature range			–65	150	°C

(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

6.2 Recommended Operating Conditions

				MIN	MAX	UNIT
V_CCA, V_CCB	Positive DC Supply voltage			0.9	3.6	V
V_I	Bus input voltage			GND	3.6	V
V_I	Input voltage			GND	3.6	V
V_C	Control input		OE	GND	3.6	V
V_O	Bus output voltage	(Power Down Mode)	B_n	GND	3.6	V
		(Active Mode)	B_n	GND	V_CCB	V
		3-State Mode	B_n	GND	3.6	V
T_A	Operating free-air temperature			–40	85	°C
Δt/Δv	Input transition rise or fall rate V_I from 30% to 70% of V_CC; V_CC = 3.3 V ±0.3 V			0	10	nS

6.3 Electrical Characteristics

over recommended operating free-air temperature range (unless otherwise noted)

PARAMETER⁽¹⁾⁽²⁾		TEST CONDITIONS	V_CCA (V)	V_CCB (V)	–40°C to 85°C		UNIT
PARAMETER⁽¹⁾⁽²⁾		TEST CONDITIONS	V_CCA (V)	V_CCB (V)	MIN	MAX	UNIT
V_IH	Input HIGH Voltage (An, OE)		2.7 – 3.6	0.9 – 3.6	2.0	–	V
			2.3 – 2.7		1.6	–
			1.4 – 2.3		0.65 × V_CCA	–
			0.9 – 1.4		0.9 × V_CCA	–
V_IL	Input LOW voltage (An, OE)		2.7 – 3.6	0.9 – 3.6	–	0.8	V
			2.3 – 2.7		–	0.7
			1.4 – 2.3		–	0.35 × V_CCA
			0.9 – 1.5		–	0.1 × V_CCA
V_OH	Output HIGH voltage	I_OH = –100 µA; V_I = V_H	0.9 – 3.6	0.9 – 3.6	V_CCB – 0.2	–	V
		I_OH = –0.5 mA; V_I = V_H	0.9	0.9	0.75 × V_CCB	–
		I_OH = –2 mA; V_I = V_H	1.4	1.4	1.05	–
		I_OH = –6 mA; V_I = V_H	1.65	1.65	1.25	–
		I_OH = –6 mA; V_I = V_H	2.3	2.3	2.0	–
		I_OH = –12 mA; V_I = V_H	2.3	2.3	1.8	–
		I_OH = –12 mA; V_I = V_H	2.7	2.7	2.2	–
		I_OH = –18 mA; V_I = V_H	2.3	2.3	1.7	–
		I_OH = –18 mA; V_I = V_H	3.0	3.0	2.4	–
		I_OH = –24 mA; V_I = V_H	3.0	3.0	2.2	–
V_OL	Output LOW voltage	I_OH = 100 µA; V_I = V_H	0.9 – 3.6	0.9 – 3.6	–	0.2	V
		I_OH = 0.5 mA; V_I = V_H	1.1	1.1	–	0.3
		I_OH = 2 mA; V_I = V_H	1.4	1.4	–	0.35
		I_OH = 6 mA; V_I = V_H	1.65	1.65	–	0.3
		I_OH = 12 mA; V_I = V_H	2.3	2.3	–	0.4
		I_OH = 12 mA; V_I = V_H	2.7	2.7	–	0.4
		I_OH = 18 mA; V_I = V_H	2.3	2.3	–	0.6
		I_OH = 18 mA; V_I = V_H	3.0	3.0	–	0.4
		I_OH = 24 mA; V_I = V_H	3.0	3.0	–	0.55
I_I	Input Leakage Current	V_I = V_CCA or GND	0.9 – 3.6	0.9 – 3.6	–1.0	1.5	μA
I_OFF	Power-Off Leakage Current	OE = 0V	0	0.9 – 3.6	–1.0	1.3	μA
I_OFF	Power-Off Leakage Current	OE = 0V	0.9 – 3.6	0	–1.0	1.5	μA
I_CCA	Quiescent Supply Current	V_I = V_CCA or GND; I_O = 0	0.9 – 3.6	0.9 – 3.6	–	3.0	μA
I_CCB	Quiescent Supply Current	V_I = V_CCA or GND; I_O = 0	0.9 – 3.6	0.9 – 3.6	–	3.0	μA
I_CCA + I_CCB	Quiescent Supply Current	V_I = V_CCA or GND; I_O = 0	0.9 – 3.6	0.9 – 3.6	–	6.0	μA
ΔI_CCA	Increase in I_CC per Input Voltage, Other inputs at V_CCA or GND	V_I = V_CCA – 0.3 V; V_I = V_CCA or GND	3.6	3.6	–	5.0	μA
ΔI_CCB	Increase in I_CC per Input Voltage, Other inputs at V_CCA or GND	V_I = V_CCA – 0.3 V; V_I = V_CCA or GND	3.6	3.6	–	5.0	μA
I_OZ	I/O Tri-State Output Leakage Current	TA = 25°C, OE = 0 V	0.9 – 3.6	0.9 – 3.6	–1.0	1.0	μA

(1) V_CCO is the V_CC associated with the output port.

(2) V_CCI is the V_CC associated with the input port.

6.4 AC Electrical Characteristics

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

	PARAMETER	V_CCA (V)	VCCB (V)	MAX	UNIT
t_PLH, t_PHL	Propagation Delay, A_n to B_n	0.9 – 3.6	0.9 – 3.6	20	nS
		1.2 – 3.6	1.2 – 3.6	7
		1.8 – 3.6	1.8 – 3.6	3.5
t_PZH, t_PZL	Output Enable, OE to B_n	0.9 – 3.6	0.9 – 3.6	23	nS
		1.2 – 3.6	1.2 – 3.6	6.5
		1.8 – 3.6	1.8 – 3.6	4.1
t_PHZ, t_PLZ	Output Disable, OE to B_n	0.9 – 3.6	0.9 – 3.6	17	nS
		1.2 – 3.6	1.2 – 3.6	7
		1.8 – 3.6	1.8 – 3.6	4.3
t_OSHL, t_OSLH	Output to Output Skew, Time	0.9 – 3.6	0.9 – 3.6	0.15	nS
		1.2 – 3.6	1.2 – 3.6	0.15
		1.8 – 3.6	1.8 – 3.6	0.15

Table 6-1 Capacitance

⁽²⁾	PARAMETER	TEST CONDITIONS	TYP⁽¹⁾	UNIT
C_IN	Control Pin Input Capacitance	V_CCA = V_CCB = 3.3 V, V_I = 0 V or V_CCA/B	3.5	pF
C_I/O	I/O Pin Input capacitance	V_CCA = V_CCB = 3.3 V, V_I = 0 V or V_CCA/B	5.0	pF
C_PD	Power Dissipation Capacitance	V_CCA = V_CCB = 3.3 V, V_I = 0 V or V_CCA/B, f = 10 MHz	33	pF

(1) Typical values are at TA = +25°C.

(2) C_PD is defined as the value of the IC's equivalent capacitance from which the operating current can be calculated from: I_{CC(operating)} ≈ C_PD × V_CC × f_IN × N_SW where I_CC = I_CCA + I_CCB and N_SW = total number of outputs switching.

7 Device and Documentation Support

7.1 Receiving Notification of Documentation Updates

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