SN74AHC541-Q1 Octal Buffer/Driver with 3-State Outputs

1 Features

Qualified for automotive applications
Operating range of 2V to 5.5V V _CC
Latch-up performance exceeds 250mA per JESD 17

2 Applications

3 Description

The SN74AHC541 octal buffer/driver is ideal for driving bus lines or buffer memory address registers. This device features inputs and outputs on opposite sides of the package to facilitate printed circuit board layout.

Package Information

PART NUMBER	PACKAGE⁽¹⁾	PACKAGE SIZE⁽²⁾	BODY SIZE⁽³⁾
SN74AHC541-Q1	PW (TSSOP, 20)	6.5mm × 6.4mm	6.5mm × 4.4mm

(1) For more information, see Section 11.

(2) The package size (length × width) is a nominal value and includes pins, where applicable.

(3) The body size (length × width) is a nominal value and does not include pins.

Logic Diagram (Positive Logic)

4 Pin Configuration and Functions

SN74AHC541-Q1 D or PW Package (Top
View)

Figure 4-1 D or PW Package (Top View)

Table 4-1 Pin Functions

PIN		I/O	DESCRIPTION
NAME	NO.	I/O	DESCRIPTION
OE1	1	I	Output Enable 1
A1	2	I	A1 Input
A2	3	I	A2 Input
A3	4	I	A3 Input
A4	5	I	A4 Input
A5	6	I	A5 Input
A6	7	I	A6 Input
A7	8	I	A7 Input
A8	9	I	A8 Input
GND	10	—	Ground
Y8	11	O	Y8 Output
Y7	12	O	Y7 Output
Y6	13	O	Y6 Output
Y5	14	O	Y5 Output
Y4	15	O	Y4 Output
Y3	16	O	Y3 Output
Y2	17	O	Y2 Output
Y1	18	O	Y1 Output
OE2	19	I	Output Enable 2
V_CC	20	—	Power Pin

5 Specifications

5.1 Absolute Maximum Ratings

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

		MIN	MAX	UNIT
V_CC	Supply voltage range	−0.5	7	V
V^I ⁽²⁾	Input voltage range	−0.5	7	V
V_O ⁽²⁾	Output voltage range	−0.5	V_CC + 0.5	V
I_IK (V_I < 0)	Input clamp current		−20	mA
I_OK (V_O < 0 or V_O > V_CC)	Output clamp current		±20	mA
I_O (V_O = 0 to V_CC)	Continuous output current		±25	mA
	Continuous current through V_CC or GND		±75	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.

(2) The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

5.2 Recommended Operating Conditions

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

			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 = 3 V	2.1
		V_CC = 5.5 V	3.85
V_IL	Low-level input voltage	V_CC = 2 V		0.5	V
		V_CC = 3 V		0.9
		V_CC = 5.5 V		1.65
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	mA
		V_CC = 3.3 V ± 0.3 V		−4	mA
		V_CC = 5 V ± 0.5 V		−8	mA
I_OL	Low-level output current	V_CC = 2 V		50	mA
		V_CC = 3.3 V ± 0.3 V		4	mA
		V_CC = 5 V ± 0.5 V		8	mA
∆t/∆v	Input transition rise or fall rate	V_CC = 3.3 V ± 0.3 V		100	ns/V
∆t/∆v	Input transition rise or fall rate	V_CC = 5 V ± 0.5 V		20	ns/V
T_A	Operating free-air temperature		−40	125	°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.