MC74VHC245_11 Datasheet, PDF (1/8 Pages) ON Semiconductor – Octal Bus Buffer/Line Driver

MC74VHC245
Octal Bus Buffer/Line Driver
The MC74VHC245 is an advanced high speed CMOS octal bus
transceiver fabricated with silicon gate CMOS technology. It achieves
high speed operation similar to equivalent Bipolar Schottky TTL
while maintaining CMOS low power dissipation.
It is intended for two−way asynchronous communication between
data buses. The direction of data transmission is determined by the
level of the DIR input. The output enable pin (OE) can be used to
disable the device, so that the buses are effectively isolated.
All inputs are equipped with protection circuits against static
discharge.
• High Speed: t_PD = 4.0 ns (Typ) at V_CC = 5 V
• Low Power Dissipation: I_CC = 4 μA (Max) at T_A = 25°C
• High Noise Immunity: V_NIH = V_NIL = 28% V_CC
• Power Down Protection Provided on Inputs
• Balanced Propagation Delays
• Designed for 2 V to 5.5 V Operating Range
• Low Noise: V_OLP = 1.2 V (Max)
• Pin and Function Compatible with Other Standard Logic Families
• Latchup Performance Exceeds 300 mA
• ESD Performance: HBM > 2000 V; Machine Model > 200 V
• Chip Complexity: 308 FETs or 77 Equivalent Gates
• These Devices are Pb−Free and are RoHS Compliant
APPLICATION NOTES
• Do not force a signal on an I/O pin when it is an active output,
damage may occur.
• All floating (high impedance) input or I/O pins must be fixed by
means of pull up or pull down resistors or bus terminator ICs.
• A parasitic diode is formed between the bus and V_CC terminals.
Therefore, the VHC245 cannot be used to interface 5 V to 3 V
systems directly.
http://onsemi.com
20
1
SOIC−20
DW SUFFIX
CASE 751D
MARKING
DIAGRAMS
20
VHC245
AWLYYWWG
1
20
1
TSSOP−20
DT SUFFIX
CASE 948E
20
VHC
245
ALYWG
G
1
VHC245
A
WL, L
Y
WW, W
G or G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device
Package Shipping^†
MC74VHC245DWG SOIC−20 38 Units/Rail
MC74VHC245DTG TSSOP−20 75 Units/Rail
MC74VHC245DWR2G SOIC−20 1000 Units/Reel
MC74VHC245DTR2G TSSOP−20 2500 Units/T&R
†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.
© Semiconductor Components Industries, LLC, 2011
1
May, 2011 − Rev. 6
Publication Order Number:
MC74VHC245/D