SN74ALVCH16543_08 Datasheet, PDF (1/16 Pages) Texas Instruments – 16-BIT REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS

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FEATURES
• Member of the Texas Instruments Widebus™
Family
• EPIC™ (Enhanced-Performance Implanted
CMOS) Submicron Process
• Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors
• ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
• Latch-Up Performance Exceeds 250 mA Per
JESD 17
• Package Options Include Plastic 300-mil
Shrink Small-Outline (DL) and Thin Shrink
Small-Outline (DGG) Packages
DESCRIPTION
This 16-bit registered transceiver is designed for
1.65-V to 3.6-V V_CC operation.
The SN74ALVCH16543 can be used as two 8-bit
transceivers or one 16-bit transceiver. Separate
latch-enable (LEAB or LEBA) and output-enable
(OEAB or OEBA) inputs are provided for each
register to permit independent control in either
direction of data flow.
The A-to-B enable (CEAB) input must be low to enter
data from A or to output data from B. If CEAB is low
and LEAB is low, the A-to-B latches are transparent;
a subsequent low-to-high transition of LEAB puts the
A latches in the storage mode. With CEAB and OEAB
both low, the 3-state B outputs are active and reflect
the data present at the output of the A latches. Data
flow from B to A is similar, but requires using CEBA,
LEBA, and OEBA.
SN74ALVCH16543
16-BIT REGISTERED TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES025E – JULY 1995 – REVISED OCTOBER 2004
DGG OR DL PACKAGE
(TOP VIEW)
1OEAB 1
1LEAB 2
1CEAB 3
GND 4
1A1 5
1A2 6
V_CC 7
1A3 8
1A4 9
1A5 10
GND 11
1A6 12
1A7 13
1A8 14
2A1 15
2A2 16
2A3 17
GND 18
2A4 19
2A5 20
2A6 21
V_CC 22
2A7 23
2A8 24
GND 25
2CEAB 26
2LEAB 27
2OEAB 28
56 1OEBA
55 1LEBA
54 1CEBA
53 GND
52 1B1
51 1B2
50 V_CC
49 1B3
48 1B4
47 1B5
46 GND
45 1B6
44 1B7
43 1B8
42 2B1
41 2B2
40 2B3
39 GND
38 2B4
37 2B5
36 2B6
35 V_CC
34 2B7
33 2B8
32 GND
31 2CEBA
30 2LEBA
29 2OEBA
To ensure the high-impedance state during power up or power down, OE should be tied to V_CC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The SN74ALVCH16543 is characterized for operation from -40°C to 85°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Widebus, EPIC are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1995–2004, Texas Instruments Incorporated