74LCX16244A STMicroelectronics, 74LCX16244A Datasheet

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74LCX16244A

Manufacturer Part Number
74LCX16244A
Description
74LCX16244ALOW VOLTAGE CMOS 16-BIT BUS BUFFER (3-STATE)WITH 5V TOLERANT INPUTS AND OUTPUTS
Manufacturer
STMicroelectronics
Datasheet

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74LCX16244AFT
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FAI
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20 000
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DESCRIPTION
The LCX16244A is a low voltage CMOS 16-BIT
BUS BUFFER (NON-INVERTED) fabricated with
sub-micron silicon gate and double-layer metal
wiring C
power and high speed 3.3V applications; it can
be interfaced to 5V signal environment for both
inputs and outputs.
Any nG output control governs four BUS
BUFFERS. Output Enable input (nG) tied
together gives full 16-bit 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.
It has better speed performance at 3.3V than 5V
LSTTL family combined with the true CMOS low
power consumption.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
February 1999
5V TOLERANT INPUTS AND OUTPUTS
HIGH SPEED:
t
POWER-DOWN PROTECTION ON INPUTS
AND OUTPUTS
SYMMETRICAL OUTPUT IMPEDANCE:
|I
PCI BUS LEVELS GUARANTEED AT 24mA
BALANCED PROPAGATION DELAYS:
t
OPERATING VOLTAGE RANGE:
V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 16244
LATCH-UP PERFORMANCE EXCEEDS 500mA
ESD PERFORMANCE:
PD
PLH
HBM >2000V; MM > 200V
LOW VOLTAGE CMOS 16-BIT BUS BUFFER (3-STATE)
OH
CC
= 5.2 ns (MAX.) at V
| = I
(OPR) = 2.7V to 3.6V (1.5V Data Retention)
t
2
PHL
OL
MOS technology. It is ideal for low
= 24 mA (MIN)
WITH 5V TOLERANT INPUTS AND OUTPUTS
CC
= 3.0V
PIN CONNECTION
(TSSOP48 Package)
ORDER CODES :
74LCX16244AT
74LCX16244A
T
1/8

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74LCX16244A Summary of contents

Page 1

... LSTTL family combined with the true CMOS low power consumption. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. February 1999 74LCX16244A T (TSSOP48 Package) ORDER CODES : 74LCX16244AT PIN CONNECTION 1/8 ...

Page 2

... INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCT ION 1 1G Output Enable Input 1Y1 to 1Y4 Data Outputs 8, 9, 11, 12 2Y1 to 2Y4 Data Outputs 13, 14, 16, 17 3Y1 to 3Y4 Data Outputs 19, 20, 22, 23 4Y1 to 4Y4 Data Outputs ...

Page 3

... Input Transition Rise or Fall Rate (V 1) Truth Table guaranteed: 1.5V to3. from0.8V to 2.0V IN Value -0 7.0 -0 7.0 -0 7.0 -0 100 -65 to +150 300 Value 2 3.0 to 3.6V 2.7 to 3.0V -40 to+85 = 3.0V) (note 74LCX16244A Unit 0 Unit ns/V 3/8 ...

Page 4

... DC SPECIFICATIONS Symb ol Parameter V High Level Input Voltage IH V Low Level Input Voltage IL V High Level Output Voltage OH V Low Level Output Voltage OL I Input Leakage Current State Output Leakage Current OZ I Power Off Leakage Current off I Quiescent Supply Current ...

Page 5

... PLHn OSHL PHLm pHLn Test Co nditi ons 10MHz (opr /16 (per circuit 74LCX16244A = t = 2.5 ns Value - Min. Max. 1.5 6 1.5 5.2 1.5 7 1.5 6.5 1.5 6 1.5 5.5 1.0 ns Valu ...

Page 6

... WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cicle) WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cicle) 6/8 ...

Page 7

... PIN 1 IDENTIFICATION 1 MAX. MIN. 1.1 0.15 0.002 0.95 0.335 0.27 0.0067 0.20 0.0035 12.6 0.408 8.25 0.313 6.2 0.236 0.70 0.020 74LCX16244A inch TYP. MAX. 0.433 0.004 0.006 0.354 0.374 0.011 0.0079 0.492 0.496 0.319 0.325 0.240 0.244 0.0197 BSC 0.024 0.028 E 7/8 ...

Page 8

... Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice ...

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