74LVC4245ADH PDF даташит
Спецификация 74LVC4245ADH изготовлена «NXP Semiconductors» и имеет функцию, называемую «Octal dual supply translating transceiver; 3-state». |
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Детали детали
Номер произв | 74LVC4245ADH |
Описание | Octal dual supply translating transceiver; 3-state |
Производители | NXP Semiconductors |
логотип |
16 Pages
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INTEGRATED CIRCUITS
DATA SHEET
74LVC4245A
Octal dual supply translating
transceiver; 3-state
Product specification
Supersedes data of 1998 Jul 29
File under Integrated Circuits, IC24
1999 Jun 15
No Preview Available ! |
Philips Semiconductors
Octal dual supply translating transceiver; 3-state
Product specification
74LVC4245A
FEATURES
• In accordance with JEDEC
standard no. 8-1A
• Wide supply voltage range:
3 V port: 1.5 to 3.6 V
5 V port: 1.5 to 5.5 V
• CMOS low power consumption
• Direct interface with TTL levels
• Control inputs accept voltages up
to 5.5 V.
DESCRIPTION
The 74LVC4245A is a high-performance, low-power, low-voltage, Si-gate
CMOS device, superior to most advanced CMOS compatible TTL families.
The 74LVC4245A is an octal dual supply translating transceiver featuring
non-inverting 3-state bus compatible outputs in both send and receive
directions. It is designed to interface between a 3 and 5 V bus in a mixed 3/5 V
supply environment.
The 74LVC4245A features an output enable (OE) input for easy cascading and
a send/receive (DIR) input for direction control. (OE) controls the outputs so
that the buses are effectively isolated.
In suspend mode, when VCCA is zero, there will be no current flow from one
supply to the other supply. The A-outputs must be set 3-state and the voltage
on the A-bus must be smaller than Vdiode (typ. 0.7 V). VCCA ≥ VCCB (except in
suspend mode).
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25 °C; tr = tf ≤ 2.5 ns.
SYMBOL
tPHL/tPLH
CI/O
CPDA
CPDB
PARAMETER
propagation delay
An to Bn
Bn to An
input/output capacitance
A port
An to Bn
Bn to An
B port
An to Bn
Bn to An
CONDITIONS
CL = 50 pF
VCCA = 5.0 V
VCCB = 3.3 V
VI = GND to VCC; note 1
VI = GND to VCC; note 1
VI = GND to VCC; note 1
VI = GND to VCC; note 1
Note
1. CPD is used to determine the dynamic power dissipation (PD in µW).
PD = CPD × VCC2 × fi + Σ(CL × VCC2 × fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in Volts;
Σ(CL × VCC2 × fo) = sum of the outputs.
TYPICAL
UNIT
4.0 ns
4.0 ns
10.0 pF
7.8 pF
27.9 pF
26 pF
10.4 pF
1999 Jun 15
2
No Preview Available ! |
Philips Semiconductors
Octal dual supply translating transceiver; 3-state
Product specification
74LVC4245A
FUNCTION TABLE
See note 1.
OE
L
L
H
INPUT
Note
1. H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
DIR
L
H
X
An
A=B
inputs
Z
INPUT/OUTPUT
Bn
inputs
B=A
Z
ORDERING INFORMATION
OUTSIDE NORTH
AMERICA
NORTH AMERICA
74LVC4245AD
74LVC4245ADB
74LVC4245APW
74LVC4245AD
74LVC4245ADB
74LVC4245ADH
PACKAGE
TEMPERATURE
RANGE
−40 to +85 °C
PINS
24
24
24
PACKAGE
SO
SSOP
TSSOP
MATERIAL CODE
plastic
plastic
plastic
SOT137-1
SOT340-1
SOT355-1
PINNING
PIN
1
2
3, 4, 5, 6, 7, 8, 9 and 10
11, 12 and 13
14, 15, 16, 17, 18, 19, 20 and 21
22
23 and 24
SYMBOL
VCCA
DIR
A0 to A7
GND
B7 to B0
OE
VCCB
DESCRIPTION
DC supply voltage (5 V bus)
direction control
data inputs/outputs
ground (0 V)
data inputs/outputs
output enable input (active LOW)
DC supply voltage (3 V bus)
1999 Jun 15
3
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Номер в каталоге | Описание | Производители |
74LVC4245AD | Octal dual supply translating transceiver; 3-state | NXP Semiconductors |
74LVC4245ADB | Octal dual supply translating transceiver; 3-state | NXP Semiconductors |
74LVC4245ADH | Octal dual supply translating transceiver; 3-state | NXP Semiconductors |
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