MOTOROLA MC74VHCT541AMEL, MC74VHCT541AML1, MC74VHCT541AML2, MC74VHCT541ADTR2, MC74VHCT541ADW Datasheet

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

Octal Bus Buffer

The MC74VHCT541A is an advanced high speed CMOS octal bus buffer fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation.

The MC74VHCT541A is a noninverting, 3±state, buffer/line driver/line receiver. When either OE1 or OE2 is high, the terminal outputs are in the high impedance state.

The VHCT inputs are compatible with TTL levels. This device can be used as a level converter for interfacing 3.3V to 5.0V, because it has full 5V CMOS level output swings.

The VHCT541A input and output (when disabled) structures provide protection when voltages between 0V and 5.5V are applied, regardless of the supply voltage. These input and output structures help prevent device destruction caused by supply voltage ± input/output voltage mismatch, battery backup, hot insertion, etc.

•High Speed: tPD = 5.4ns (Typ) at VCC = 5V

•Low Power Dissipation: ICC = 4μA (Max) at TA = 25°C

•TTL±Compatible Inputs: VIL = 0.8V; VIH = 2.0V

•Power Down Protection Provided on Inputs and Outputs

•Balanced Propagation Delays

•Designed for 4.5V to 5.5V Operating Range

•Low Noise: VOLP = 1.6V (Max)

•Pin and Function Compatible with Other Standard Logic Families

•Latchup Performance Exceeds 300mA

•ESD Performance: HBM > 2000V; Machine Model > 200V

•Chip Complexity: 134 FETs or 33.5 Equivalent Gates

LOGIC DIAGRAM

	A1	2	18	Y1
	A2	3	17	Y2
	A3	4	16	Y3
	A4	5	15	Y4
DATA					NONINVERTING
INPUTS		6	14		OUTPUTS
	A5			Y5
	A6	7	13	Y6
	A7	8	12	Y7
	A8	9	11	Y8
	OE1		1
OUTPUT
ENABLES	OE2		19

MC74VHCT541A

DW SUFFIX

20±LEAD SOIC PACKAGE

CASE 751D±04

DT SUFFIX

20±LEAD TSSOP PACKAGE

CASE 948E±02

M SUFFIX

20±LEAD SOIC EIAJ PACKAGE

CASE 967±01

ORDERING INFORMATION

MC74VHCTXXXADW SOIC

MC74VHCTXXXADT TSSOP

MC74VHCTXXXAM SOIC EIAJ

PIN ASSIGNMENT

	OE1			1	20		VCC
	A1			2	19	OE2
	A2			3	18	Y1
	A3			4	17	Y2
	A4			5	16	Y3
	A5			6	15		Y4
	A6			7	14		Y5
	A7			8	13		Y6
	A8			9	12		Y7
GND				10	11		Y8

				FUNCTION TABLE
				Inputs				Output Y
		OE1			OE2		A
		L			L		L	L
		L			L		H	H
		H			X		X	Z
		X			H		X	Z

6/97

Motorola, Inc. 1997

1

REV 0

MC74VHCT541A

MAXIMUM RATINGS*

Symbol	Parameter		Value	Unit
VCC	DC Supply Voltage		± 0.5 to + 7.0	V
Vin	DC Input Voltage		± 0.5 to + 7.0	V
Vout	DC Output Voltage	Outputs in 3±State	± 0.5 to + 7.0	V
		High or Low State	± 0.5 to VCC + 0.5
IIK	Input Diode Current		± 20	mA
IOK	Output Diode Current (VOUT < GND; VOUT > VCC)		± 20	mA
Iout	DC Output Current, per Pin		± 25	mA
ICC	DC Supply Current, VCC and GND Pins		± 75	mA
PD	Power Dissipation in Still Air,	SOIC Packages²	500	mW
		TSSOP Package²	450
Tstg	Storage Temperature		± 65 to + 150	_C

*Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute±maximum±rated conditions is not implied.

²Derating Ð SOIC Packages: ± 7 mW/ _C from 65_ to 125_C TSSOP Package: ± 6.1 mW/_C from 65_ to 125_C

RECOMMENDED OPERATING CONDITIONS

Symbol	Parameter		Min	Max	Unit
VCC	DC Supply Voltage		4.5	5.5	V
Vin	DC Input Voltage		0	5.5	V
Vout	DC Output Voltage	Outputs in 3±State	0	5.5	V
		High or Low State	0	VCC
TA	Operating Temperature		± 40	+ 85	_C
tr, tf	Input Rise and Fall Time	VCC =5.0V ±0.5V	0	20	ns/V

DC ELECTRICAL CHARACTERISTICS

This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high±impedance circuit. For proper operation, Vin and Vout should be constrained to the

range GND v (Vin or Vout) v VCC. Unused inputs must always be

tied to an appropriate logic voltage level (e.g., either GND or VCC). Unused outputs must be left open.

VCC

TA = 25°C

TA = ± 40 to 85°C

Symbol

Parameter

Test Conditions

V

Min

Typ

Max

Min

Max

Unit

VIH

Minimum High±Level

4.5 to

2.0

2.0

V

Input Voltage

5.5

VIL

Maximum Low±Level

4.5 to

0.8

0.8

V

Input Voltage

5.5

VOH

Minimum High±Level

IOH = ± 50μA

4.5

4.4

4.5

4.4

V

Output Voltage

V

= V

IH

or V

IL

IOH = ± 8mA

4.5

3.94

3.80

in

VOL

Maximum Low±Level

IOL = 50μA

4.5

0.0

0.1

0.1

V

Output Voltage

V

= V

IH

or V

IL

IOL = 8mA

4.5

0.36

0.44

in

Iin

Maximum Input

Vin = 5.5 V or GND

0 to 5.5

± 0.1

± 1.0

μA

Leakage Current

IOZ

Maximum 3±State

Vin = VIL or VIH

5.5

± 0.25

± 2.5

μA

Leakage Current

Vout = VCC or GND

ICC

Maximum Quiescent

Vin = VCC or GND

5.5

4.0

40.0

μA

Supply Current

MOTOROLA	2	VHC Data ± Advanced CMOS Logic
		DL203 Ð Rev 1