74ABT841
10-bit bus interface latch; 3-state
Rev. 4 — 7 November 2011
Product data sheet
1. General description
The 74ABT841 high performance BiCMOS device combines low static and dynamic
power dissipation with high speed and high output drive.
The 74ABT841 bus interface register is designed to provide extra data width for wider
data/address paths of buses carrying parity.
The 74ABT841 consists of ten D-type latches with 3-state outputs. The flip-flops appear
transparent to the data when latch enable (LE) is HIGH. This allows asynchronous
operation, as the output transition follows the data in transition. On the LE HIGH-to-LOW
transition, the data that meets the set-up and hold time is latched.
Data appears on the bus when the output enable (OE) is LOW. When OE is HIGH the
output is in the high-impedance state.
2. Features and benefits
High speed parallel latches
Extra data width for wide address/data paths or buses carrying parity
Ideal where high speed, light loading, or increased fan-in are required with MOS
microprocessors
Broadside pinout
Output capability: +64 mA and 32 mA
Power-up 3-state
Power-up reset
Latch-up protection exceeds 500 mA per JESD78B class II level A
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
74ABT841
NXP Semiconductors
10-bit bus interface latch; 3-state
5. Pinning information
5.1 Pinning
74ABT841
OE
1
24 VCC
D0
2
23 Q0
D1
3
22 Q1
D2
4
21 Q2
D3
5
20 Q3
D4
6
19 Q4
D5
7
18 Q5
D6
8
17 Q6
D7
9
16 Q7
D8 10
15 Q8
D9 11
14 Q9
GND 12
13 LE
001aae910
Fig 4.
Pin configuration
5.2 Pin description
Table 2.
Pin description
Symbol
Pin
Description
OE
1
output enable input (active LOW)
D0 to D9
2, 3, 4, 5, 6, 7, 8, 9,10, 11
data input
GND
12
ground (0 V)
LE
13
latch enable input (active falling edge)
Q0 to Q9
23, 22, 21, 20, 19, 18, 17, 16, 15, 14
data output
VCC
24
positive supply voltage
74ABT841
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 7 November 2011
© NXP B.V. 2011. All rights reserved.
3 of 15