SN74ALVCH16543DLR ,16-Bit Registered Transceiver With 3-State OutputsSCES025E–JULY 1995–REVISED OCTOBER 2004(1)LOGIC SYMBOL561OEBA 1EN3541CEBA G1551LEBA 1C512EN41OEAB3G ..
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SN74LVC257ANSR ,Quadruple 2-Line To 1-Line Data Selector/Multiplexer With 3-State Outputs SCAS294O–JANUARY 1993–REVISED JUNE 20155 Device OptionsPART NUMBER PACKAGE BODY SIZESN74LVC257ARGY ..
SN74ALVCH16543DGGR-SN74ALVCH16543DL-SN74ALVCH16543DLR
16-Bit Registered Transceiver With 3-State Outputs
FEATURES
DESCRIPTION
DGG OR DL PACKAGE
(TOP VIEW)1OEAB
1LEAB
1CEAB
GND
1A1
1A2
VCC
1A3
1A4
1A5
GND
1A6
1A7
1A8
2A1
2A2
2A3
GND
2A4
2A5
2A6
VCC
2A7
2A8
GND
2CEAB
2LEAB
2OEAB
1OEBA
1LEBA
1CEBA
GND
1B1
1B2
VCC
1B3
1B4
1B5
GND
1B6
1B7
1B8
2B1
2B2
2B3
GND
2B4
2B5
2B6
VCC
2B7
2B8
GND
2CEBA
2LEBA
2OEBA ensure the high-impedance state during power upor power OE should be tiedto VCC througha pullup
SN74ALVCH16543
16-BIT REGISTERED TRANSCEIVER Memberof the 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 2000V Per
MIL-STD-883, Method 3015; Exceeds 200V
Using Machine(C= 200 pF,R=0) Latch-Up Performance Exceeds 250 mA Per
JESD17 Package Options Plastic 300-mil
Shrink Small-Outline (DL) and Thin Shrink
Small-Outline (DGG) Packages 16-bit transceiver is designed for
1.65-Vto 3.6-V VCC
The SN74ALVCH16543 can be used as two 8-bit
transceivers or one 16-bit transceiver. Separate
latch-enable (LEAB LEBA) and output-enable
(OEAB or OEBA) are provided for each
register to permit control in either
directionof data flow.
The A-to-B enable (CEAB) input mustbe lowto enter
data fromAorto output data fromB.If CEABis low
and LEABis low, latches are transparent; subsequent low-to-high transitionof LEAB puts the latchesin the mode. With CEAB and OEAB
both low, the 3-state outputs are active and reflect
the data presentat outputof theA latches. Data
flow fromBtoAis but requires using CEBA,
LEBA, and OEBA.
resistor; the minimumof the resistoris determinedby the capabilityof the driver.
Active bus-hold circuitryis providedto hold unusedor floating data inputsata valid logic level.
The SN74ALVCH16543is characterized for operation from -40°C 85°C.
