Datasheet 54LVTH244ARPFS, 54LVTH244ARPFI, 54LVTH244ARPFE, 54LVTH244ARPFB Datasheet (MAXWELL)

PRELIMINARY

54LVTH244A

3.3V ABT 8-Bit Octal
Buffers/Drivers

FEATURES:

• 3.3V ABT octal buffers/drivers with 3-state outputs

•R

AD-PAK® radiation-hardened against natural space radia-

tion

• Package:

- 20 Pin R

• Operating temperature range:

-55 to 125

• Supports mixed-mode signal operation

-5V Input and Output Voltages with 3.3V V

• Supports mixed-mode signal operation

- 5V input and output voltages with 3.3V V

• Supports unregulated battery operation down to 2.7V

•Typical V
T

A

• Supports live insertion

• Bus-hold data inputs eliminate the need for external pullup
resistors

AD-PAK® flat package

°

C

(output ground bounce) < 0.8V at VCC=3.3V,

OLP

=25°C

CC

CC

Logic Diagram

DESCRIPTION:

Maxwell Technologies’ 54LVTH244A octal buffers/drivers
micro-circuit is housed in a Rad-Pak® package. The
54LVTH244A is designed specifically for low voltage (3.3V)
V

operation, but with the capability to provide a TTL inter-

CC

face to a 5V system environment. The 54LVTH244A is orga­nized as two 4-bit drivers with separate output enable (OE
inputs. When OE
inputs to the Y outputs. When OE
the high impedance state. The 54LVTH244A active bus hold
circuitry is provided to prevent floating data inputs at a valid
logic level and to eliminate the need for pullup resistors.

Maxwell Technologies' patented R
ogy incorporates radiation shielding in the microcircuit pack­age. It eliminates the need for box shielding while providing
the required radiation shielding for a lifetime in orbit or a space
mission. This product is available with packaging and screen­ing up to Class S.

is low, the device passes data from the A

is high, the outputs are in

AD-PAK® packaging technol-

Memory

)

1000601

[phone] - Fax: [phone] - www.maxwell.com

12.19.01 Rev 1

All data sheets are subject to change without notice

©2001 Maxwell Technologies

All rights reserved.

1

3.3V ABT 8-Bit Octal Buffers/Drivers

TABLE 1. PINOUT DESCRIPTION

PRELIMINARY

PIN SYMBOL DESCRIPTION

1, 19 1OE-2OE Output Enable

2, 4, 6, 8 IA1-IA4 Input

3, 5, 7, 9 2Y4-2Y1 Output

10 GND Ground

11, 13, 15, 17 2A1-2A4 Input

12, 14, 16, 18 1Y4-1Y1 Output

54LVTH244A

20 V

CC

TABLE 2. 54LVTH244A ABSOLUTE MAXIMUM RATINGS

P

ARAMETER SYMBOL MIN MAX UNIT

Supply Voltage Range V

Input Voltage Range

Voltage Range Applied to Any Output in the High State or Power-Off

2

Supply Voltage

CC

V

I

V

O

1

-0.5 4.6 V

-0.5 7.0 V

-0.5 7.0 V

State

Current into Any Output in the Low State I

Current Into Any Output in the High State

Input Clamp Current (V

Output Clamp Current (V

Total Power Dissipation at T

< 0) I

I

< 0) I

O

= 55 °CP

A

3

Operating Temperature T

Storage Temperature Range T

I

OK

O

O

IK

D

A

S

-- 96 mA

-- 48 mA

-- -50 mA

-- -50 mA

-- 650

mW

-55 125 °C

-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 betond those indicated under “Rec­ommended Operating Conditions” is not imp[lied. Exposure to absolute-maximum-rated conditions for extended periods may
affect device reliability.

Memory

2. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.

3. This current flows only when the output is in the high state and VO > VCC.

1000601

12.19.01 Rev 1

All data sheets are subject to change without notice

©2001 Maxwell Technologies

All rights reserved.

2

3.3V ABT 8-Bit Octal Buffers/Drivers

TABLE 3. DELTA LIMITS

54LVTH244A

PRELIMINARY

TABLE 4. 54LVTH244A RECOMMENDED OPERATING CONDITIONS

ARAMETER SYMBOL MIN MAX UNIT

P

Supply Voltage V

High-level Input Voltage V

Low-level Input Voltage V

Input Voltage V

High-level Output Current I

Low-level Output Current I

Input Transition Rise or Fall Rate

Operating Temperature T

PARAMETER VARIATION

I

CC(OL)

I

OZH

I

OZL

±10% of specified value on Table 5

±10% of specified value on Table 5

±10% of specified value on Table 5

CC

IH

IL

I

OH

OL

∆t/∆v-- 10 ns/V

A

1

2.7 3.6 V

2.0 -- V

-- 0.8 V

-- 5.5 V

-- -24 mA

-- 48 mA

-55 125

1. All unused control inputs must be held high or low toensure proper device operation.

Memory

°

C

TABLE 5. 54LVTH244A DC ELECTRICAL CHARACTERISTICS

(VCC = 3.3V ±10%, TA = -55 °C TO 125 °C, UNLESS OTHERWISE SPECIFIED)

P

ARAMETER SYMBOL TEST CONDITIONS MIN MAX UNIT

Input Clamp Voltage V

High-Level Output Voltage V

Low-Level Output Voltage V

1000601

VCC = 2.7 II = -18mA -- -1.2 V

IK

OHVCC

OL

= 2.7V to 3.6V IOH = -100µA VCC -0.2 -- V

V

= 2.7V IOH = -8mA 2.4 --

CC

V

= 3V IOH = 24mA 2.0 --

CC

VCC = 2.7V IOL = 100µA -- 0.2 V

I

= 24mA -- 0.5

OL

V

= 3V IOL = 16mA -- 0.4

CC

I

= 32mA -- 0.5

OL

I

= 32mA -- 0.55

OL

12.19.01 Rev 1

All data sheets are subject to change without notice

3

©2001 Maxwell Technologies

All rights reserved.

3.3V ABT 8-Bit Octal Buffers/Drivers

TABLE 5. 54LVTH244A DC ELECTRICAL CHARACTERISTICS

(VCC = 3.3V ±10%, TA = -55 °C TO 125 °C, UNLESS OTHERWISE SPECIFIED)

P

PRELIMINARY

Input Current I

Hold Current I

Output Disabled Leakage Cur­rent - High

Output Disabled Leakage Cur­rent - Low

Power Up Current I

Power Down Current I

Supply Current I

Delta Supply Current

Input Capacitance C

Input Output Capacitance C

ARAMETER SYMBOL TEST CONDITIONS MIN MAX UNIT

VCC = 0 or 3.6V VI = 5.5V 10 µA

I

V

= 3.6V VI = VCC or

CC

V

= 3.6V VI = V

CC

I(HOLD)VCC

I

OZHVCC

I

OZL

OZPU

OZPD

CC

∆I

CC

2

I

2

O

= 3V VI = 0.8V Data Inputs 75 -- µA

= 3.6V, VO = 3V -- 5 µA

VCC = 3.6V, VO = 0.5V -- -5 µA

2

VCC = 0 to 1.5V, VO = 0.5V to 3V, OE = don’t care -- ±100 µA

2

VCC = 1.5V to 0, VO = 0.5V to 3V, OE = don’t care -- ±100 µA

VCC = 3.6V Outputs high -- 0.19 mA

I

= 0 Outputs low -- 5

O

V

= VCC or GND Outputs dis-

I

1

V

= 3V to 3.6V, One input at VCC -0.6V, Other inputs

CC

at V

or GND

CC

VI = 3V or 0 -- 8 pF

VO = 3V or 0 -- 15 pF

54LVTH244A

Control

GND

CC

V

= 0 -- -5

I

V

= 2V -75 --

I

Inputs

Data Inputs -- 1

abled

-- ±1

-- 0.19

-- 0.2 mA

Memory

1. This is the increase in supply current for each input that is at the specified TTL voltage level rather than V

2. Guaranteed by design.

TABLE 6. 54LVTH244A AC ELECTRICAL CHARACTERISTICS

(TA = -55 °C TO 125 °C, CL = 50 PF, UNLESS OTHERWISE SPECIFIED)

P

ARAMETER SYMBOL V

Propogation Delay Time

A to Y

Output Enable Time

OE

to Y

Output Disable

OE

to Y

1000601

t

t

t

t

PLH

PHL

PZH

t

PHZ

t

PZL

PLZ

= 3.3V ± 0.3V VCC = 2.7V UNIT

CC

MIN MAX MIN MAX

-- 4.7 -- 4.1 ns

-- 4.4 -- 3.9

-- 6.9 -- 6.0 ns

-- 5.4 -- 5.4

-- 6.2 -- 5.8 ns

-- 5.5 -- 4.8

12.19.01 Rev 1

All data sheets are subject to change without notice

©2001 Maxwell Technologies

or GND.

CC

All rights reserved.

4

3.3V ABT 8-Bit Octal Buffers/Drivers

TABLE 7. FUNCTION TABLE

(EACH BUFFER)

54LVTH244A

PRELIMINARY

Figure Note:

1. CL includes probe and jog capacitance

INPUTS OUTPUT

OE

AY

lHH

LLL

HXZ

FIGURE 1. LOAD CIRCUIT FOR OUTPUTS

Memory

PARAMETER MEASUREMENT INFORMATION

TEST S1

T

PLH/TPHL

T

PLZ/TPZL

T

PHZ/TPZH

Open

6V

GND

FIGURE 2. PULSE DURATION

1000601

12.19.01 Rev 1

All data sheets are subject to change without notice

©2001 Maxwell Technologies

All rights reserved.

5

3.3V ABT 8-Bit Octal Buffers/Drivers

FIGURE 3. SETUP AND HOLD TIMES

PRELIMINARY

FIGURE 4.PROPAGATION DELAY TIMES INVERTING AND NON-INVERTING OUTPUTS

54LVTH244A

Memory

FIGURE 5. OUTPUT ENABLE TIMING

Figure Notes:

2. All input pulses are supplied by generators having the following characteristics: PRR <
ns.

3. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.

4. The outputs are measured one at a time with one transition per measurement.

10 MHz, Z

= 50Ω, t

O

< 2.5 ns, tf < 2.5

r

1000601

12.19.01 Rev 1

All data sheets are subject to change without notice

©2001 Maxwell Technologies

All rights reserved.

6

3.3V ABT 8-Bit Octal Buffers/Drivers

PRELIMINARY

54LVTH244A

Memory

20 PIN RAD-PAK® FLAT PACKAGE

SYMBOL DIMENSION

MIN NOM MAX

A 0.128 0.141 0.154

b 0.015 0.017 0.022

c 0.003 0.005 0.009

D 0.470 0.480 0.490

E 0.287 0.295 0.303

E1 -- -- 0.333

E2 0.155 0.160 --

E3 0.030 0.068 --

e 0.050 BSC

L 0.370 0.380 0.390

Q 0.035 0.039 0.042

S1 0.005 0.007 --

N20

F20-01

Note: All dimensions in inches

1000601

12.19.01 Rev 1

All data sheets are subject to change without notice

©2001 Maxwell Technologies

All rights reserved.

7

3.3V ABT 8-Bit Octal Buffers/Drivers

Important Notice:

These data sheets are created using the chip manufacturer’s published specifications. Maxwell Technologies verifies

PRELIMINARY

functionality by testing key parameters either by 100% testing, sample testing or characterization.

The specifications presented within these data sheets represent the latest and most accurate information available to
date. However, these specifications are subject to change without notice and Maxwell Technologies assumes no
responsibility for the use of this information.

Maxwell Technologies’ products are not authorized for use as critical components in life support devices or systems
without express written approval from Maxwell Technologies.

Any claim against Maxwell Technologies must be made within 90 days from the date of shipment from Maxwell Tech­nologies. Maxwell Technologies’ liability shall be limited to replacement of defective parts.

54LVTH244A

Memory

1000601

12.19.01 Rev 1

All data sheets are subject to change without notice

©2001 Maxwell Technologies

All rights reserved.

8

3.3V ABT 8-Bit Octal Buffers/Drivers

)

Product Ordering Options

54LVTH244A

PRELIMINARY

54LVTH244A

Model Number

RP

F X

Feature

Screening Flow

Package

Option Details

Monolithic
S = Maxwell Class S
B = Maxwell Class B
E = Engineering (testing @ +25°C
I = Industrial (testing @ -55°C,
+25°C, +125°C)

Memory

F = Flat Pack

1000601

Radiation Feature

Base Product
Nomenclature

12.19.01 Rev 1

RP = R

AD-PAK® package

3.3V ABT 8-Bit Octal Buffers/Driv­ers

All data sheets are subject to change without notice

9

©2001 Maxwell Technologies

All rights reserved.