74HCT640N NXP Semiconductors, 74HCT640N Datasheet - Page 2

• Manufacturer Part Number: 74HCT640N
• Description: IC, 74HCT CMOS, 74HCT640, DIP20, 5V
• Manufacturer: NXP Semiconductors

Specifications of 74HCT640N

• Supply Voltage Range: 4.5V To 5.5V
• Logic Case Style: DIP
• No. Of Pins: 20
• Operating Temperature Range: -40°C To +125°C
• Svhc: No SVHC (18-Jun-2010)
• Package / Case: DIP
• Base Number: 74
• Ic Generic: RoHS Compliant

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
GND = 0 V; T
Notes
1. C
2. For HC the condition is V
ORDERING INFORMATION
See
March 1988
t
C
C
C
PHL
Octal bidirectional bus interface
Inverting 3-state outputs
Output capability: bus driver
I
Octal bus transceiver; 3-state; inverting
I
I/O
PD
CC
f
f
C
V
For HCT the condition is V
i
o
“74HC/HCT/HCU/HCMOS Logic Package Information”
/
CC
PD
L
t
category: MSI
SYMBOL
= output frequency in MHz
= input frequency in MHz
(C
PLH
= output load capacitance in pF
P
is used to determine the dynamic power dissipation (P
= supply voltage in V
L
D
= C
V
amb
CC
PD
2
= 25 C; t
V
f
o
CC
) = sum of outputs
propagation delay
input capacitance
input/output capacitance
power dissipation capacitance
per transceiver
2
A
B
n
n
to B
to A
f
r
i
= t
+
I
I
f
n
n
= GND to V
= GND to V
;
= 6 ns
PARAMETER
(C
L
V
CC
2
CC
CC
f
o
) where:
1.5 V
C
notes 1 and 2
L
2
.
= 15 pF; V
GENERAL DESCRIPTION
The 74HC/HCT640 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). They are specified in compliance with JEDEC
standard no. 7A.
The 74HC/HCT640 are octal transceivers featuring
inverting 3-state bus compatible outputs in both send and
receive directions.
The “640” features an output enable (OE) input for easy
cascading and a send/receive (DIR) for direction control.
OE controls the outputs so that the buses are effectively
isolated. The “640” is similar to the “245” but has inverting
outputs.
D
in W):
CONDITIONS
CC
= 5 V
9
3.5
10
35
HC
TYPICAL
74HC/HCT640
Product specification
9
3.5
10
35
HCT
ns
pF
pF
pF
UNIT