74ALVCH32973EC: 16-bit bus transceiver and transparant D-type latch with 8 independent buffers
The 74ALVCH32973 is a 16-bit bus transceiver and transparent D-type latch with 8
independent buffers with bus hold inputs and 3-state outputs. It features direction (1DIR,
2DIR), latch enable (1LOE, 2LOE), transceiver output enable (1TOE, 2TOE) and latch
enable (1LE, 2LE) control inputs; four 8-bit transceiver ports (1An, 2An & 1Bn, 2Bn); two
8-bit D-type latch output ports (1Qn, 2Qn) and an 8-bit buffer with data inputs Dn and
outputs Yn. The configuration of the control pins allows the device to be used as one 8-bit
buffer, two 8-bit transceivers, and two 8-bit latches or one 8-bit buffer, one 16-bit
transceiver and one 16-bit latch.
The 8-bit buffer functions independently of the control inputs. The direction of data
transmission between A and B is controlled by nDIR and when nTOE is set HIGH the A
and B ports will assume a HIGH-impedance OFF-state, they will be effectively isolated.
When nLE is HIGH, data at the A inputs enter the latches. In this condition the latches are
transparent, a Q output will change each time its corresponding A-input changes. When
nLE is LOW the latches store the information that was present at the inputs a set-up time
preceding the HIGH-to-LOW transition of nLE. A HIGH on nLOE causes the Q outputs to
assume a high-impedance OFF-state. Operation of the nLOE input does not affect the
state of the latches.
74ALVCH32973EC: Product Block Diagram
![74ALVCH32973EC: Product Block Diagram](/image/nxp/sh00160.gif)
sot536-1_3d
![sot536-1_3d](/image/nxp/sot536-1_3d.gif)
Data Sheets (1)
Application Notes (7)
Brochures (3)
Selector Guides (2)
Package Information (1)
Ordering Information
Product | Status | Family | Function | VCC (V) | Logic switching levels | Description | Output drive capability (mA) | Package version | tpd (ns) | No of bits | Power dissipation considerations | Tamb (Cel) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name | No of pins |
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74ALVCH32973EC | Active | ALVC | Latches/registered drivers | 1.8 - 3.6 | LVTTL | 16-bit transceiver and transparent D-type latch with 8 independent buffers | +/- 24 | SOT536-1 | 2.5 | 16 | low | -40~85 | 60 | 16.0 | | LFBGA96 | 96 |
Package Information
Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | EFR | IFR(FIT) | MTBF(hour) | MSL | MSL LF |
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74ALVCH32973EC | ![](/image/nxp/sot536-1_3d.gif) | SOT536-1 | | Reel 13" Q1/T1 in Drypack | Active | 74ALVCH32973EC,518
(9352 983 51518) | VCH32973 | 74ALVCH32973EC | ![](/image/nxp/RoHS_Compliant_White.jpg) ![](/image/nxp/Pb_image_transparent.gif) ![](/image/nxp/Halogen_Antimony_Free_Green.jpg) | Always Pb-free | 123.8 | 3.87 | 2.58E8 | NA | 2 |