74CBTLV3244 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet Rev. 3 — 8 November 2016 4 of 19
NXP Semiconductors
74CBTLV3244
8-bit bus switch with 4-bit output enables
5.2 Pin description
6. Functional description
[1] H = HIGH voltage level; L = LOW voltage level; Z = high-impedance OFF-state.
7. Limiting values
[1] The minimum input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For SSOP20 and TSSOP20 packages: above 60 C the value of P
tot
derates linearly at 5.5 mW/K.
For DHVQFN20 packages: above 60 C the value of P
tot
derates linearly at 4.5 mW/K.
Table 2. Pin description
Symbol Pin Description
1OE
, 2OE 1, 19 output enable input (active LOW)
1A1 to 1A4 2, 4, 6, 8 data input/output (A port)
2B1 to 2B4 9, 7, 5, 3 data input/output (A port)
GND 10 ground (0 V)
2A1 to 2A4 11, 13, 15, 17 data input/output (B port)
1B1 to 1B4 18, 16, 14, 12 data input/output (B port)
V
CC
20 positive supply voltage
Table 3. Function selection
[1]
Input Input/output
nOE nAn, nBn
LnAn = nBn
HZ
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Max Unit
V
CC
supply voltage 0.5 +4.6 V
V
I
input voltage
[1]
0.5 +4.6 V
V
SW
switch voltage enable and disable mode
[1]
0.5 V
CC
+ 0.5 V
I
IK
input clamping current V
I
< 0.5 V 50 - mA
I
SK
switch clamping current V
I
< 0.5 V 50 - mA
I
SW
switch current V
SW
= 0 V to V
CC
- 128 mA
I
CC
supply current - +100 mA
I
GND
ground current 100 - mA
T
stg
storage temperature 65 +150 C
P
tot
total power dissipation T
amb
= 40 Cto+125C
[2]
- 500 mW