 Semiconductor Components Industries, LLC, 2004
November, 2004 − Rev. 5
1 Publication Order Number:
74VCX16373/D
74VCX16373
Low-Voltage 1.8/2.5/3.3V
16-Bit Transparent Latch
With 3.6 V−Tolerant Inputs and Outputs
(3−State, Non−Inverting)
The 74VCX16373 is an advanced performance, non−inverting
16−bit transparent latch. It is designed for very high−speed, very
low−power operation in 1.8 V, 2.5 V or 3.3 V systems. The
VCX16373 is byte controlled, with each byte functioning identically,
but independently. Each byte has separate Output Enable and Latch
Enable inputs. These control pins can be tied together for full 16−bit
operation.
When operating at 2.5 V (or 1.8 V) the part is designed to tolerate
voltages it may encounter on either inputs or outputs when interfacing
to 3.3 V busses. It is guaranteed to be overvoltage tolerant to 3.6 V.
The 74VCX16373 contains 16 D−type latches with 3−state
3.6 V−tolerant outputs. When the Latch Enable (LEn) inputs are
HIGH, data on the Dn inputs enters the latches. In this condition, the
latches are transparent, (a latch output will change state each time its
D input changes). When LE is LOW, the latch stores the information
that was present on the D inputs a setup time preceding the
HIGH−to−LOW transition of LE. The 3−state outputs are controlled
by the Output Enable (OEn) inputs. When OE is LOW, the outputs are
enabled. When OE is HIGH, the standard outputs are in the high
impedance state, but this does not interfere with new data entering into
the latches.
Features
• Designed for Low Voltage Operation: V
CC
= 1.65 V − 3.6 V
• 3.6 V Tolerant Inputs and Outputs
• High Speed Operation: 3.0 ns max for 3.0 V to 3.6 V
3.9 ns max for 2.3 V to 2.7 V
6.8 ns max for 1.65 V to 1.95 V
• Static Drive: ±24 mA Drive at 3.0 V
±18 mA Drive at 2.3 V
±6 mA Drive at 1.65 V
• Supports Live Insertion and Withdrawal
• I
OFF
Specification Guarantees High Impedance When V
CC
= 0 V
• Near Zero Static Supply Current in All Three Logic States (20 A)
Substantially Reduces System Power Requirements
• Latchup Performance Exceeds ±250 mA @ 125°C
• ESD Performance: Human Body Model >2000 V;
Machine Model >200 V
• All Devices in Package TSSOP are Inherently Pb−Free*
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
MARKING DIAGRAM
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
TSSOP−48
DT SUFFIX
CASE 1201
1
48
VCX16373
AWLYYWW
1
48
PIN NAMES
Function
Output Enable Inputs
Latch Enable Inputs
Inputs
Outputs
Pins
OEn
LEn
D0−D15
O0−O15
Device Package Shipping
†
ORDERING INFORMATION
74VCX16373DT TSSOP
(Pb−Free)
39 / Rail
74VCX16373DTR TSSOP
(Pb−Free)
2500 / Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
http://onsemi.com