Document
54VCXH162244
Datasheet
Low voltage CMOS 16-bit bus buffer (3-state non inverter) with 3.6 V tolerant inputs and outputs
Product status link 54VCXH162244
Features
• 1.8 to 3.6 V operating voltage • 5 ns propagation delay • 100 mV typical input hysteresis • Power down protection on inputs and outputs • Symmetrical output impedance • 26 Ω series resistance in outputs • Bus hold on data inputs • Cold spare function • Latch-up performance exceeds 300 mA (JESD 17) • 300 krad(Si) total ionizing dose (TID) • No SEL, no SEU and no SET at 110 MeV.cm2/mg LET • QML-V qualified • SMD 5962F05210
Description
The 54VCXH162244 is a low voltage CMOS 16-bit bus buffer (non inverted) fabricated with submicron silicon gate and five-layer metal wiring C²MOS technology. It is ideal for low power and very high speed 1.8 V to 3.6 V applications; it can be interfaced to 3.6 V signal environment for both inputs and outputs. Any nG output control governs four BUS buffers. Output enable input (nG) tied together gives full 16bit operation. When nG is low, the outputs are on. When nG is high, the output are in high impedance state. This device is designed to be used with 3-state memory address drivers, etc. Bus hold on data inputs is provided in order to eliminate the need for external pull-up or pull-down resistor. The device circuits is including 26 Ω series resistance in the outputs. These resistors permit to reduce line noise in high speed applications. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2 kV ESD immunity and transient excess voltage.
DS3953 - Rev 11 - January 2024 For further information contact your local STMicroelectronics sales office.
www.st.com
54VCXH162244
Logic symbols and I/O equivalent circuit
1
Logic symbols and I/O equivalent circuit
Figure 1. IEC logic symbols
DS3953 - Rev 11
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54VCXH162244
Logic symbols and I/O equivalent circuit
Figure 2. Input and output equivalent circuit
DS3953 - Rev 11
page 3/20
2
Pin settings
2.1
Pin connection
Figure 3. Pin connection (top through view)
54VCXH162244
Pin settings
DS3953 - Rev 11
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2.2
Pin description
Pin 1
2, 3, 5, 6 8, 9, 11, 12 13, 14, 16, 17 19, 20, 22, 23
24 25 30, 29, 27, 26 36, 35, 33, 32 41, 40, 38, 37 47, 46, 44, 43 48 4, 10, 15, 21, 28, 34, 39, 45 7, 18, 31, 42
Table 1. Pin description
Symbol 1G
1Y1 to 1Y4 2Y1 to 2Y4 3Y1 to 3Y4 4Y1 to 4Y4
4G 3G 4A1 to 4A4 3A1 to 3A4 2A1 to 2A4 1A1 to 1A4 2G GND VCC
54VCXH162244
Pin settings
Name and function Output enable input
Data outputs Data outputs Data outputs Data outputs Output enable input Output enable input Data outputs Data outputs Data outputs Data outputs Output enable input Ground (0 V) Positive supply voltage
2.3
Truth table
Table 2. Truth table
Inputs
G
An
L
L
L
H
H
X
X = do not care; Z = high impedance
Outputs Yn L H Z
DS3953 - Rev 11
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54VCXH162244
Maximum ratings
3
Maximum ratings
Stressing the device above the rating listed in the “absolute maximum ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Table 3. Absolute maximum ratings
Symbol
Parameter
Value
Unit
VCC VI VO VO IIK IOK IO ICC or IGND PD Tstg TL Rthjc
Supply voltage DC input voltage DC output voltage (OFF-state)(1) DC output voltage (high or low-state) DC input diode current DC output diode current(2) DC output current DC VCC or ground current per supply pin Power dissipation Storage temperature Lead temperature (10 s) Thermal resistance junction-to-case(3)
-0.5 to +4.6 -0.5 to +4.6 -0.5 to +4.6 -0.5 to VCC + 0.5
-50 -50 ±50 ±100 400 -65 to +150 260 22
V V V V mA mA mA mA mW °C °C °C/W
ESD
HBM: human body model(4)
2
kV
1. IO absolute maximum rating must be observed. 2. VO < GND, VO > VCC. 3. Short-circuits can cause excessive heating and destructive dissipation. Values are typical.
4. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating.
DS3953 - Rev 11
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3.1
Recommended conditions
Table 4. Recommended operating conditions
Symbol
Parameter
VCC VI VO VO IOH, IOL IOH, IOL Top
Supply voltage Input voltage Output voltage (OFF-state) Output voltage (high or low-state) High or low level output current (VCC = 3.0 to 3.6 V) High or low level output current (VCC = 2.3 to 2.7 V) Operating temperature
dt/dv
Input rise and fall time(1)
1. VIN from 0.8 V to 2 V at VCC = 3.0 V.
54VCXH162244
Maximum ratings
Value 1.8 to 3.6 -0.3 to 3.6 0 to 3.6 0 to VCC
± 12 ±8 -55 to 125 0 to 10
Unit V V V V mA mA °C
n.