54LVTH162245 Bus Transceivers Datasheet

54LVTH162245 Datasheet, PDF, Equivalent


Part Number

54LVTH162245

Description

16-Bit Bus Transceivers

Manufacture

Maxwell Technologies

Total Page 10 Pages
Datasheet
Download 54LVTH162245 Datasheet


54LVTH162245
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54LVTH162245
16-Bit Bus Transceivers with
3-State Outputs
/
/
/
/
Logic Diagram
FEATURES:
• A-Port outputs have equivalent 22-series resistors, so
no external resistors are required
• Support mixed-mode signal operation (5V input and output
voltages with 3.3V VCC)
• Support unregulated battery operation down to 2.7V
• Typical VOLP (output ground bounce) < 0.8V at VCC = 3.3V,
TA = 25°C
• IOFF and power-up 3-state support hot insertion
• Bus hold on data inputs eliminates the need for external
pullup/pulldown resistors
• Distributed VCC and GND pin configuration minimizes high-
speed switching noise
• Flow-through architecture optimizes PCB layout
• Total dose hardness:
- > 100 krad (Si), depending upon space mission
• Package: 48 pin RAD-PAK® flat pack
DESCRIPTION:
Maxwell Technologies’ 54LVTH162245 devices are 16-bit
(dual-octal) non-inverting 3-state transceivers designed for
low-voltage (3.3V) VCC operation, but with the capability to
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) input can be used to disable the device so that
the buses are effectively isolated. The A-port outputs, which
are designed to source or sink up to 12 mA, include equivalent
22-series resistors to reduce overshoot and undershoot.
Maxwell Technologies' patented RAD-PAK® packaging technol-
ogy incorporates radiation shielding in the microcircuit pack-
age. 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, RAD-PAK provides greater than 100
krad (Si) radiation dose tolerance. This product is available
with screening up to Class S.
11.15.02 Rev 2
(858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com
All data sheets are subject to change without notice 1
©2002 Maxwell Technologies
All rights reserved.

54LVTH162245
16-Bit Bus Transceivers with 3-State Outputs
54LVTH162245
.
TABLE 1. PINOUT DESCRIPTION
PIN
1, 24
2, 3, 5, 6, 8, 9, 11, 12
4, 10, 15, 21, 28, 34, 39, 45
7, 18, 31, 42
13, 14, 16, 17, 19, 20, 22, 23
25, 48
26, 27, 29, 30, 32, 33, 35, 36
37, 38, 40, 41, 43, 44, 46, 47
SYMBOL
1DIR - 2DIR
1B1 - 1B8
GND
VCC
2B - 2B8
2OE - 1OE
2A8 - 2A1
1A8 - 1A1
DESCRIPTION
Direction Control
Output
Ground
Supply Voltage
Output
Output Enable
Input
Input
TABLE 2. 54LVTH162245 ABSOLUTE MAXIMUM RATINGS 1
PARAMETER
SYMBOL
MIN
MAX
Supply voltage range
Input voltage range 2
Voltage range applied to any output in the high-impedance or
power-off state 2
Voltage range applied to any output in the high state 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
Output clamp current
Thermal resistance
Operating temperature range
Storage temperature range
Power Dissipation
VCC
VI
VO
VO
IO
IO
IIK (VI < 0)
IOK (VO < 0)
ΘJC
TA
TS
PD
-0.5
-0.5
-0.5
-0.5
--
--
--
--
-50
-50
--
-55
-65
--
4.6
7
7
VCC + 0.5
96
30
48
30
--
--
5
125
150
1
UNIT
V
V
V
V
mA
mA
mA
mA
°C/W
°C
°C
W
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 “rec-
ommended 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.
11.15.02 Rev 2
All data sheets are subject to change without notice 2
©2002 Maxwell Technologies
All rights reserved.


Features www.DataSheet4U.com 54LVTH162245 16-Bit Bus Transceivers with 3-State Outputs / / / / Memory Logic Diagram FEA TURES: • A-Port outputs have equivale nt 22-Ω series resistors, so no exter nal resistors are required • Support mixed-mode signal operation (5V input a nd output voltages with 3.3V VCC) • S upport unregulated battery operation do wn to 2.7V • Typical VOLP (output gro und bounce) < 0.8V at VCC = 3.3V, TA = 25° C • IOFF and power-up 3-state su pport hot insertion • Bus hold on dat a inputs eliminates the need for extern al pullup/pulldown resistors • Distri buted VCC and GND pin configuration min imizes highspeed switching noise • Fl ow-through architecture optimizes PCB l ayout • Total dose hardness: - > 100 krad (Si), depending upon space mission • Package: 48 pin RAD-PAK® flat pac k DESCRIPTION: Maxwell Technologies’ 54LVTH162245 devices are 16-bit (dual- octal) non-inverting 3-state transceive rs designed for low-voltage (3.3V) VCC operation, but with the capability to provide a TT.
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