MAXWELL 54LVTH162245RPFS, 54LVTH162245RPFI, 54LVTH162245RPFE, 54LVTH162245RPFB Datasheet

54LVTH162245

16-Bit Bus Transceivers with

3-State Outputs

/

/

/

/

Memory

FEATURES:

• A-Port outputs have equivalent 22-Ω series resistors, so

no external 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
pullup/pulldown resistors

• Distributed V
speed switching noise

• Flow-through architecture optimizes PCB layout

• Total dose hardness:

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

• 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

Logic Diagram

DESCRIPTION:

Maxwell Technologies’ 54LVTH162245 devices are 16-bit
(dual-octal) non-inverting 3-state transceivers designed for
low-voltage (3.3V) V
provide a TTL interface to a 5V system environment. These
devices can be used as two 8-bit transceivers or one 16-bit
transceiver. The devices allow data transmission from the A
bus to the B bus or form the B bus to the A bus, depending on
the logic level at the direction-control (DIR) input. The output
enable (OE
the buses are effectively isolated. The A-port outputs, which
are designed to source or sink up to 12 mA, include equivalent
22-

Ω series resistors to reduce overshoot and undershoot.

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.

) input can be used to disable the device so that

operation, but with the capability to

CC

AD-PAK® packaging technol-

AD-PAK provides greater than 100

1000611

[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 Bus Transceivers with 3-State Outputs

.

TABLE 1. PINOUT DESCRIPTION

PIN SYMBOL DESCRIPTION

1, 24 1DIR - 2DIR Direction Control

2, 3, 5, 6, 8, 9, 11, 12 1B1 - 1B8 Output

4, 10, 15, 21, 28, 34, 39, 45 GND Ground

7, 18, 31, 42 V

13, 14, 16, 17, 19, 20, 22, 23 2B - 2B8 Output

25, 48 2OE

26, 27, 29, 30, 32, 33, 35, 36 2A8 - 2A1 Input

37, 38, 40, 41, 43, 44, 46, 47 1A8 - 1A1 Input

CC

- 1OE Output Enable

54LVTH162245

Supply Voltage

TABLE 2. 54LVTH162245 ABSOLUTE MAXIMUM RATINGS

ARAMETER SYMBOL MIN MAX UNIT

P

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

B Port
A Port

Current into any output in the high state

3

B Port
A Port

Input clamp current I

Output clamp current I

Thermal resistance

(VI < 0) -50 -- mA

IK

(VO < 0) -50 -- mA

OK

Θ

Operating temperature range T

Storage temperature range T

CC

V

I

V

O

V

O

I

O

I

O

JC

A

S

-0.5 4.6 V

-0.5 7 V

-0.5 7 V

-0.5 VCC + 0.5 V

--

--

--

--

-- 5

-55 125 °C

-65 150

1

mA
96
30

mA
48
30

°

°

Power Dissipation PD -- 1 W

Memory

C

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 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 V

1000611

12.19.01 Rev 1

> VCC.

O

All data sheets are subject to change without notice

©2001 Maxwell Technologies

All rights reserved.

2

16-Bit Bus Transceivers with 3-State Outputs

TABLE 3. DELTA LIMITS

PARAMETER VARIATION

54LVTH162245

I

CC(OL)

I

CC(OH)

I

CC(OD)

±10% of specified value in Table 5

±10% of specified value in Table 5

±10% of specified value in Table 5

TABLE 4. 54LVTH162245 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 A port I

B port -- -24

Low-level output current A port I

B port -- 48

Input transition rise or fall rate Outputs

enabled

Power-up ramp rate

Operating temperature T

∆t/∆v-- 10 ns/V

∆t/∆V

OH

1

CC

IH

IL

I

2.7 3.6 V

2--V

-- 0.8 V

-- 5.5 V

-- -12 mA

Memory

OL

CC

A

-- 12 mA

200 -- µs/V

-55 125

°

C

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

TABLE 5. 54LVTH162245 DC ELECTRICAL CHARACTERISTICS

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

P

ARAMETER SYMBOL TEST CONDITIONS MIN MAX UNIT

Input Clamp Voltage V

High-Level Output
Voltage

1000611

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

IK

V

OHVCC

= 2.7V to

IOH = -100 µA A Port VCC -0.2 -- V

3.6V

V

= 3V IOH = -12 mA 2 --

CC

V

= 2.7V to

CC

IOH = -100 µA B Port VCC -0.2 --

3.6V

V

= 2.7V IOH = -8 mA 2.4

CC

V

= 3V, IOH = -24 mA 2

CC

12.19.01 Rev 1

All data sheets are subject to change without notice

3

©2001 Maxwell Technologies

All rights reserved.