Philips Semiconductors
Product specification
16-bit bus transceiver with direction pin; 5 V tolerant
(3-state)
FEATURES
•
5 V tolerant inputs/outputs for interfacing with 5 V logic
•
Wide supply voltage range from 1.2 to 3.6 V
•
CMOS low power consumption
•
MULTIBYTE
TM
flow-through standard pin-out
architecture
•
Low inductance multiple power and ground pins for
minimum noise and ground bounce
•
Direct interface with TTL levels
•
High-impedance when V
CC
= 0 V
•
All data inputs have bushold (74LVCH16245A only)
•
Complies with JEDEC standard no. 8-1A
•
ESD protection:
HBM EIA/JESD22-A114-A exceeds 2000 V
MM EIA/JESD22-A115-A exceeds 200 V.
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
°C;
t
r
= t
f
≤
2.5 ns.
SYMBOL
t
PHL
/t
PLH
C
I
C
I/O
C
PD
Note
1. C
PD
is used to determine the dynamic power dissipation (P
D
in
µW).
P
D
= C
PD
×
V
CC2
×
f
i
×
N +
Σ(C
L
×
V
CC2
×
f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in Volts;
N = total switching outputs;
Σ(C
L
×
V
CC2
×
f
o
) = sum of the outputs.
PARAMETER
propagation delay nA
n
to nB
n
; nB
n
to nA
n
input capacitance
input/output capacitance
power dissipation capacitance per gate
V
I
= GND to V
CC
; note 1
CONDITIONS
C
L
= 50 pF; V
CC
= 3.3 V
DESCRIPTION
74LVC16245A;
74LVCH16245A
The 74LVC(H)16245A is a high-performance, low-power,
low-voltage, Si-gate CMOS device, superior to most
advanced CMOS compatible TTL families. Inputs can be
driven from either 3.3 or 5 V devices. In 3-state operation,
outputs can handle 5 Volt. These features allow the use of
these devices as a mixed 3.3 and 5 V environment.
The 74LVC(H)16245A is a 16-bit transceiver featuring
non-inverting 3-state bus compatible outputs in both send
and receive directions. The device features two output
enable (nOE) inputs for easy cascading and two
send/receive (nDIR) inputs for direction control. nOE
controls the outputs so that the buses are effectively
isolated. This device can be used as two 8-bit transceivers
or one 16-bit transceiver.
The 74LVCH16245A bushold data inputs eliminates the
need for external pull-up resistors to hold unused inputs.
TYPICAL
3.0
5.0
10
30
ns
pF
pF
pF
UNIT
2003 Jan 30
2
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