
COMMERCIALTEMPERATURERANGE
2
IDT74FCT841A/B
HIGH-PERFORMANCECMOSBUSINTERFACELATCH
PIN CONFIGURATION
Symbol
Description
Max
Unit
VTERM(2)
Terminal Voltage with Respect to GND
–0.5 to +7
V
VTERM(3)
Terminal Voltage with Respect to GND
–0.5 to VCC
V
TA
Operating Temperature
0 to +70
° C
TBIAS
Temperature under BIAS
–55 to +125
° C
TSTG
Storage Temperature
–55 to +125
° C
PT
Power Dissipation
0.5
W
IOUT
DC Output Current
120
mA
ABSOLUTE MAXIMUM RATINGS(1)
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability. No terminal voltage may exceed
Vcc by +0.5V unless otherwise noted.
2. Input and Vcc terminals only.
3. Output and I/O terminals only.
FUNCTION TABLE(1)
Inputs
Internal
Output
OE
LE
Dx
Qx
Yx
Function
H
X
Z
High Z
H
L
Z
High Z
H
Z
High Z
H
L
X
N C
Z
Latched (High Z)
L
H
L
Transparent
L
H
Transparent
L
X
N C
Latched
H
L
X
L
Z
Latched (High Z)
H
L
X
H
Z
Latched (High Z)
Pin Names
I/O
Description
Dx
I
Latch Data Inputs
LE
I
Latch Enable Input. The latches are transparent when
LE is HIGH. Input data is latched on the HIGH-to-
LOW transition.
Y x
O
3-State Latch Outputs
OE
I
Output Enable Control. When
OE is LOW, the
outputs are enabled. When
OE is HIGH, the outputs
Yx are in high-impedance (off) state.
PIN DESCRIPTION
NOTE:
1. H = HIGH Voltage Level
X = Don’t Care
L = LOW Voltage Level
Z = High-Impedance
NC = No Change
SOIC
TOP VIEW
2
3
1
20
19
18
15
16
9
10
D6
D7
D2
D5
D3
D4
D8
23
22
24
21
17
5
6
7
4
8
D0
VCC
LE
OE
13
14
11
12
D1
GND
D9
Y6
Y7
Y2
Y5
Y3
Y4
Y8
Y0
Y1
Y9
Symbol
Parameter
(1)
Conditions
Typ.
Max.
Unit
CIN
Input Capacitance
VIN = 0V
6
10
pF
COUT
Output Capacitance
VOUT = 0V
8
12
pF
CAPACITANCE (TA = +25°C, F = 1.0MHz)
NOTE:
1. This parameter is measured at characterization but not tested.