MAXWELL 54LVTH162244RPFS, 54LVTH162244RPFE, 54LVTH162244RPFB, 54LVTH162244RPFI Datasheet

54LVTH162244

16-Bit Buffers/Drivers with

3-State Outputs

Memory

FEATURES:

•RAD-PAK® radiation-hardened against natural space radia-
tion

• Total dose hardness:

- > 100 krad (Si), depending upon space mission

• Output ports have equivalent 22­external resistors are required

• Support mixed-mode signal operation (5V input and output
voltages with 3.3V V

• Support unregulated battery operation down to 2.7V

•Typical V
T

= 25°C

A

•I

and power-up 3-state support hot insertion

OFF

• Bus hold on data inputs eliminates the need for external
pull-up/pull-down resistors

• Distributed V
speed switching noise

• Flow-through architecture optimizes PCB layout

• Package: 48 pin R

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

OLP

CC

)

CC

and GND pin configuration minimizes high-

AD-PAK flat pack

Ω series resistors, so no

Logic Diagram

DESCRIPTION:

Maxwell Technologies’ 54LVTH162244 devices are 16-bit buff­ers and line drivers designed for low-voltage (3.3V) V
ation, but with the capability to provide a TTL interface to a 5V
system environment. These devices can be used as four 4-bit
buffers, two 8-bit buffers, or one 16-bit buffer. These devices
provide true outputs and symmetrical active-low output-enable
(OE

) inputs.

The outputs, which are designed to source or sink up to 12
mA, include equivalent 22­shoot and undershoot. Active bus-hold circuitry is provided to
hold unused or floating data inputs at a valid logic level.

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 space
mission. In a GEO orbit, R
krad (Si) radiation dose tolerance. This product is available
with screening up to Class S.

Ω series resistors to reduce over-

AD-PAK® packaging technol-

AD-PAK provides greater than 100

CC

oper-

1000607

[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

16-Bit Buffers/Drivers with 3-State Outputs

TABLE 1. PINOUT DESCRIPTION

PIN SYMBOL DESCRIPTION

1, 48, 25, 24 1OE-4OE Output Enable

2, 3, 5, 6 1Y1-1Y4 Output

4, 10, 15, 21, 28, 34,

39, 45

7, 18, 31, 42 V

8, 9, 11, 12 2Y1-2Y4 Output

13, 14, 16, 17 3Y1-3Y4 Output

19, 20, 22, 23 4Y1-4Y4 Output

47, 46, 44, 43 1A1-1A4 Input

41, 40, 38, 37 2A1-2A4 Input

36, 35, 33, 32 3A1-3A4 Input

30, 29, 27, 26 4A1-4A4 Input

GND Ground

CC

Supply Voltage

54LVTH162244

Memory

TABLE 2. 162244 ABSOLUTE MAXIMUM RATINGS

P

ARAMETER SYMBOL MIN MAX UNIT

Supply Voltage Range V

Input Voltage Range

2

Voltage range applied to any output in the high-impedance or
power-off state

Voltage range applied to any output in the high state

2

2

Current into any output in the low state I

Current into any output in the high state

3

Input clamp current I

Output clamp current I

Operating Temperature T

Storage Temperature Range T

Operating Temperature Range T

CC

V

I

V

O

V

O

O

I

O

(VI < 0) -- -50 mA

IK

(VO < 0) -- -50 mA

OK

A

S

A

1

-0.5 4.6 V

-0.5 7 V

-0.5 7 V

-0.5 to V

CC

0.5 V

-- 30 mA

30 -- mA

-55 125 °C

-65 150

-55 125 °C

°

C

1. Stresses beyond 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 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.

1000607

12.19.01 Rev 1

All data sheets are subject to change without notice

©2001 Maxwell Technologies.

All rights reserved.

2

16-Bit Buffers/Drivers with 3-State Outputs

TABLE 3. DELTA LIMITS

PARAMETER VARIATION

54LVTH162244

I

CC(OP)

I

OZH

I

OZL

TABLE 4. 162244 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 Outputs

±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

2.7 3.6 V

2--V

-- 0.8 V

-- 5.5 V

-- -12 mA

-- 12 mA

∆t/∆v-- 10 ns/V

1

enabled

Power-up ramp rate

∆t/∆V

Operating Temperature T

CC

A

200 -- µs/V

-55 125

1. All unused control inputs of the device must be held at high or low to ensure proper device operation.

Memory

°

C

P

ARAMETER SYMBOL TEST CONDITIONS MIN MAX UNIT

Input Clamp Voltage V

High-Level Output Voltage V

Low-Level Output Voltage V

Input Current I

Hold Current I

Output Disabled Leakage
Current - High

1000607

TABLE 5. 162244 DC ELECTRICAL CHARACTERISTICS

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

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

IK

OHVCC

OL

I

I(HOLD)VCC

I

OZHVCC

= 3V IOH = -12 mA 2 -- V

VCC = 3V IOL = 12 mA -- 0.8 V

VCC = 0 or 3.6V VI = 5.5V -- 10 µA

V

= 3.6V VI = VCC or

CC

Control inputs -- ±1

GND

V

= 3.6V VI = V

CC

CC

V

= 0 -- -5

I

Data Inputs -- 1

= 3V VI = 0.8V Data Inputs 75 -- µA

V

= 2V -75 --

I

= 3.6V, VO = 3V -- 5 µA

12.19.01 Rev 1

All data sheets are subject to change without notice

3

©2001 Maxwell Technologies.

All rights reserved.