74LVC4245A PHILIPS [NXP Semiconductors], 74LVC4245A Datasheet - Page 2

• Manufacturer Part Number: 74LVC4245A
• Description: Octal dual supply translating transceiver; 3-state
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
GND = 0 V; T
Note
1. C
1999 Jun 15
t
C
C
C
PHL
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.
I/O
PDA
PDB
Octal dual supply translating transceiver; 3-state
SYMBOL
P
f
f
C
V
i
o
/t
(C
D
CC
PD
= input frequency in MHz;
L
PLH
= output frequency in MHz;
= output load capacitance in pF;
= C
L
= supply voltage in Volts;
is used to determine the dynamic power dissipation (P
PD
V
CC
amb
2
V
CC
= 25 C; t
propagation delay
input/output capacitance
A port
B port
f
o
2
) = sum of the outputs.
A
B
A
B
A
B
n
n
n
n
n
n
f
i
to B
to A
to B
to A
to B
to A
+ (C
r
n
n
n
n
n
n
= t
PARAMETER
L
f
2.5 ns.
V
CC
2
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 V
supply to the other supply. The A-outputs must be set 3-state and the voltage
on the A-bus must be smaller than V
suspend mode).
f
o
) where:
C
V
V
V
V
I
I
I
I
2
L
V
V
= GND to V
= GND to V
= GND to V
= GND to V
= 50 pF
CCA
CCB
D
in W).
CONDITIONS
= 5.0 V
= 3.3 V
CCA
is zero, there will be no current flow from one
CC
CC
CC
CC
; note 1
; note 1
; note 1
; note 1
diode
(typ. 0.7 V). V
4.0
4.0
10.0
7.8
27.9
26
10.4
TYPICAL
Product specification
74LVC4245A
CCA
V
CCB
ns
ns
pF
pF
pF
pF
pF
(except in
UNIT