74HCT646N,652 NXP Semiconductors, 74HCT646N,652 Datasheet - Page 4

• Manufacturer Part Number: 74HCT646N,652
• Description: IC TRANSCVR 3ST 8BIT INV 24DIP
• Manufacturer: NXP Semiconductors
• Series: 74HCTr

Specifications of 74HCT646N,652

• Logic Type: Transceiver, Inverting
• Number Of Elements: 1
• Number Of Bits Per Element: 8
• Current - Output High, Low: 6mA, 6mA
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 24-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 74HCT646N; 74HCT646N; 933670990652

Philips Semiconductors
FUNCTION TABLE
Notes
1. H = HIGH voltage level
2. The data output functions may be enabled or disabled by various signals at the OE and DIR inputs. Data input
September 1993
H
H
L
L
L
L
Octal bus transceiver/register; 3-state
OE
L = LOW voltage level
X = don’t care
functions are always enabled, i.e., data at the bus inputs will be stored on every LOW-to-HIGH transition on the clock
inputs.
= LOW-to-HIGH level transition
X
X
L
L
H
H
DIR
Fig.4 Functional diagram.
H or L
X
X
X
H or L
CP
INPUTS
AB
H or L
X
H or L
X
X
CP
(1)
BA
X
X
X
X
L
H
S
AB
X
X
L
H
X
X
S
BA
input
output
input
A
4
0
to A
DATA I/O
7
input
input
output
B
0
(2)
to B
7
FUNCTION
isolation
store A and B data
real-time B data to A bus
stored B data to A bus
real-time A data to B bus
stored A data to B bus
74HC/HCT646
Product specification