74LVC32245AEC PHILIPS [NXP Semiconductors], 74LVC32245AEC Datasheet - Page 2

• Manufacturer Part Number: 74LVC32245AEC
• Description: 32-bit bus transceiver with direction pin; 5 V tolerant; 3-state
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
Ground = 0 V; T
Note
1. C
1999 Sep 01
t
C
C
C
PHL
5 V tolerant inputs/outputs for interfacing with 5 V logic
Wide supply voltage range of 1.2 to 3.6 V
Complies with JEDEC standard no. 8-1A
CMOS low power consumption
MULTIBYTE flow-trough standard pin-out architecture
Low inductance multiple power and ground pins for
minimum noise and ground bounce
Direct interface with TTL levels
Bus hold on data inputs (74LVCH32245A only)
Typical output ground bounce voltage:
V
Typical output V
V
Power-off disabled outputs, permitting live insertion
Plastic fine-pitch ball grid array package.
I
I/O
PD
32-bit bus transceiver with direction pin;
5 V tolerant; 3-state
OLP
OHV
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
< 0.8 V at V
L
> 2 V at V
is used to determine the dynamic power dissipation (P
= supply voltage in Volts;
PD
V
CC
2
V
amb
CC
CC
propagation delay
nA
input capacitance
input/output capacitance
power dissipation capacitance per
buffer
OH
f
o
CC
2
= 25 C; t
) = sum of the outputs.
n
= 3.3 V; T
undershoot voltage:
to nB
= 3.3 V; T
f
i
+ (C
n
; nB
PARAMETER
r
L
= t
amb
amb
n
f
V
to nA
= 25 C
CC
2.5 ns.
= 25 C
2
n
f
o
) where:
C
V
I
L
2
= GND to V
= 50 pF; V
DESCRIPTION
The 74LVC(H)32245A 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 V. These features allow the use of
these devices in a mixed 3.3 and 5 V environment.
The 74LVC(H)32245A is a 32-bit transceiver featuring
non-inverting 3-state bus compatible outputs in both send
and receive directions. The 74LVC(H)32245A features two
output enable (nOE) inputs for easy cascading and two
send or receive (nDIR) inputs for direction control. nOE
controls the outputs so that the buses are effectively
isolated.
To ensure the high-impedance state during power-up or
power-down, input nOE should be tied to V
pull-up resistor; the minimum value of the resistor is
determined by the current-sinking capability of the driver.
The 74LVCH32245A bus hold data inputs eliminates the
need for external pull-up resistors to hold unused or
floating data inputs at a valid logic level (see Fig.2).
D
CONDITIONS
in W).
CC
CC
= 3.3 V
; note 1
3.0
5.0
10
30
74LVCH32245A
TYPICAL
74LVC32245A;
Product specification
CC
ns
pF
pF
pF
through a
UNIT